A) $$ \{[(18-3)+(7+5)-2]+5\}-12= $$ B) $$ 18-\{2 imes[5 imes 3+(8 imes 4-2 imes 9)-(19 imes 3-37)]\}= $$ C) $$ 25+\{12+[2-(8-6)]+2\}= $$ D) $$ 38-7 imes\{10-[6 imes 8:(14-8)-5] imes 2\}= $$ E) $$ (11+5): 4+(25-15): 5+3 imes 7-(4 imes 3+5)+1= $$ F) $$ 25-\{20+[18-(13+10: 2)]\}= $$ G) $$ 38-\{20-[22-(5 imes 3)+(7-4 imes 1)]\}= $$ H) $$ 26+\{12-[(30-18)-(4: 1): 2]-1\}= $$ I) $$ 65-\{30-[20-(10-1+6)+1]\}= $$ J) $$ 45+\{15-[(10-8)+(7-4)-3]-6\}= $$ K) $$ 40+\{50-[35-(6 imes 5)-1]\}+7= $$

Question

A) $$ \{[(18-3)+(7+5)-2]+5\}-12= $$ B) $$ 18-\{2 	imes[5 	imes 3+(8 	imes 4-2 	imes 9)-(19 	imes 3-37)]\}= $$ C) $$ 25+\{12+[2-(8-6)]+2\}= $$ D) $$ 38-7 	imes\{10-[6 	imes 8:(14-8)-5] 	imes 2\}= $$ E) $$ (11+5): 4+(25-15): 5+3 	imes 7-(4 	imes 3+5)+1= $$ F) $$ 25-\{20+[18-(13+10: 2)]\}= $$ G) $$ 38-\{20-[22-(5 	imes 3)+(7-4 	imes 1)]\}= $$ H) $$ 26+\{12-[(30-18)-(4: 1): 2]-1\}= $$ I) $$ 65-\{30-[20-(10-1+6)+1]\}= $$ J) $$ 45+\{15-[(10-8)+(7-4)-3]-6\}= $$ K) $$ 40+\{50-[35-(6 	imes 5)-1]\}+7= $$

UpStudy AI · Accepted Answer

**A) $$ \{[(18-3)+(7+5)-2]+5\}-12 $$**

1. Calcule $$ 18-3=15 $$ e $$ 7+5=12 $$.
2. Some e subtraia: 
   $$
   15+12-2=25
   $$
3. Some 5:
   $$
   25+5=30
   $$
4. Subtraia 12:
   $$
   30-12=18
   $$

Resultado: $$ 18 $$.

---

**B) $$ 18-\{2 \times[5 \times 3+(8 \times 4-2 \times 9)-(19 \times 3-37)]\} $$**

1. Calcule $$ 5 \times 3=15 $$.
2. Calcule $$ 8 \times 4=32 $$ e $$ 2 \times 9=18 $$; então:
   $$
   32-18=14
   $$
3. Calcule $$ 19 \times 3=57 $$ e depois:
   $$
   57-37=20
   $$
4. Dentro dos colchetes:
   $$
   15+14-20=9
   $$
5. Multiplique por 2:
   $$
   2 \times 9=18
   $$
6. Por fim:
   $$
   18-18=0
   $$

Resultado: $$ 0 $$.

---

**C) $$ 25+\{12+[2-(8-6)]+2\} $$**

1. Calcule $$ 8-6=2 $$ e depois:
   $$
   2-2=0
   $$
2. Some dentro dos colchetes:
   $$
   12+0+2=14
   $$
3. Some com 25:
   $$
   25+14=39
   $$

Resultado: $$ 39 $$.

---

**D) $$ 38-7 \times\{10-[6 \times 8:(14-8)-5] \times 2\} $$**

1. Dentro dos parênteses: calcule $$ 14-8=6 $$.
2. Realize a divisão: 
   $$
   8:6=\frac{8}{6}
   $$
3. Multiplicando:
   $$
   6 \times\frac{8}{6}=8
   $$
4. Subtraia 5:
   $$
   8-5=3
   $$
5. Multiplique por 2:
   $$
   3 \times 2=6
   $$
6. Dentro das chaves:
   $$
   10-6=4
   $$
7. Multiplique por 7:
   $$
   7 \times 4=28
   $$
8. Finalmente:
   $$
   38-28=10
   $$

Resultado: $$ 10 $$.

---

**E) $$ (11+5): 4+(25-15): 5+3 \times 7-(4 \times 3+5)+1 $$**

1. Calcule $$ 11+5=16 $$, assim:
   $$
   16:4=4
   $$
2. Calcule $$ 25-15=10 $$, assim:
   $$
   10:5=2
   $$
3. Multiplique:
   $$
   3 \times 7=21
   $$
4. Calcule:
   $$
   4 \times 3=12 \quad \text{e} \quad 12+5=17
   $$
5. Some e subtraia:
   $$
   4+2+21-17+1=11
   $$

Resultado: $$ 11 $$.

---

**F) $$ 25-\{20+[18-(13+10: 2)]\} $$**

1. Calcule a divisão:
   $$
   10:2=5
   $$
2. Some:
   $$
   13+5=18
   $$
3. Subtraia:
   $$
   18-18=0
   $$
4. Some dentro das chaves:
   $$
   20+0=20
   $$
5. Por fim:
   $$
   25-20=5
   $$

Resultado: $$ 5 $$.

---

**G) $$ 38-\{20-[22-(5 \times 3)+(7-4 \times 1)]\} $$**

1. Calcule:
   $$
   5 \times 3=15
   $$
2. Calcule:
   $$
   4 \times 1=4 \quad \text{e} \quad 7-4=3
   $$
3. Dentro dos colchetes:
   $$
   22-15+3=10
   $$
4. Dentro das chaves:
   $$
   20-10=10
   $$
5. Finalmente:
   $$
   38-10=28
   $$

Resultado: $$ 28 $$.

---

**H) $$ 26+\{12-[(30-18)-(4: 1): 2]-1\} $$**

1. Calcule:
   $$
   30-18=12
   $$
2. Calcule a divisão:
   $$
   4:1=4 \quad \text{e depois} \quad 4:2=2
   $$
3. Subtraia:
   $$
   12-2=10
   $$
4. Dentro das chaves:
   $$
   12-10-1=1
   $$
5. Some com 26:
   $$
   26+1=27
   $$

Resultado: $$ 27 $$.

---

**I) $$ 65-\{30-[20-(10-1+6)+1]\} $$**

1. Calcule:
   $$
   10-1=9 \quad \text{e} \quad 9+6=15
   $$
2. Subtraia:
   $$
   20-15=5
   $$
3. Some:
   $$
   5+1=6
   $$
4. Dentro das chaves:
   $$
   30-6=24
   $$
5. Finalmente:
   $$
   65-24=41
   $$

Resultado: $$ 41 $$.

---

**J) $$ 45+\{15-[(10-8)+(7-4)-3]-6\} $$**

1. Calcule:
   $$
   10-8=2 \quad \text{e} \quad 7-4=3
   $$
2. Dentro dos colchetes:
   $$
   2+3-3=2
   $$
3. Dentro das chaves:
   $$
   15-2-6=7
   $$
4. Some com 45:
   $$
   45+7=52
   $$

Resultado: $$ 52 $$.

---

**K) $$ 40+\{50-[35-(6 \times 5)-1]\}+7 $$**

1. Calcule:
   $$
   6 \times 5=30
   $$
2. Dentro dos colchetes:
   $$
   35-30-1=4
   $$
3. Então:
   $$
   50-4=46
   $$
4. Some:
   $$
   40+46+7=93
   $$

Resultado: $$ 93 $$.
**A) 18** **B) 0** **C) 39** **D) 10** **E) 11** **F) 5** **G) 28** **H) 27** **I) 41** **J) 52** **K) 93**

A)
B)
C)
D)
E)
F)
G)
H)
I)
J)
K)

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