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Solve each equation for \( x \). Graph your solution on a number line. a. \( \quad 10-2(2 x+1)=4(x-2) \) b. \( \quad 5-(2 x-3)=-8+2 x \)

Ask by Hanson Pena. in the United States
Jan 27,2025

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Answer

**Solutions:** - **a.** \( x = 2 \) - **b.** \( x = 4 \) **Graphs on Number Lines:** - **a.** A dot at 2. - **b.** A dot at 4.

Solution

Let's solve each equation step-by-step and represent the solutions on a number line. --- ### Problem a. \[ 10 - 2(2x + 1) = 4(x - 2) \] **Step 1: Expand and simplify both sides.** \[ 10 - 4x - 2 = 4x - 8 \] \[ 8 - 4x = 4x - 8 \] **Step 2: Collect like terms.** \[ 8 + 8 = 4x + 4x \] \[ 16 = 8x \] **Step 3: Solve for \( x \).** \[ x = \frac{16}{8} = 2 \] **Solution:** \( x = 2 \) **Graph on a Number Line:** ``` <---|---|---|---|---|---> 0 1 2 3 4 ● ``` --- ### Problem b. \[ 5 - (2x - 3) = -8 + 2x \] **Step 1: Expand and simplify both sides.** \[ 5 - 2x + 3 = -8 + 2x \] \[ 8 - 2x = -8 + 2x \] **Step 2: Collect like terms.** \[ 8 + 8 = 2x + 2x \] \[ 16 = 4x \] **Step 3: Solve for \( x \).** \[ x = \frac{16}{4} = 4 \] **Solution:** \( x = 4 \) **Graph on a Number Line:** ``` <---|---|---|---|---|---|---> 0 1 2 3 4 5 ● ``` --- **Summary of Solutions:** - **a.** \( x = 2 \) - **b.** \( x = 4 \) Both solutions are represented on their respective number lines with a solid dot indicating the exact value of \( x \).

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Let's solve each equation step by step! a. \( 10-2(2 x+1)=4(x-2) \) First, distribute the -2 on the left side: \[ 10 - 4x - 2 = 4x - 8 \] Combine like terms: \[ 8 - 4x = 4x - 8 \] Add \( 4x \) to both sides: \[ 8 = 8x - 8 \] Now, add 8 to both sides: \[ 16 = 8x \] Divide by 8: \[ x = 2 \] Graph this on a number line as a point indicating \( x = 2 \). b. \( 5-(2 x-3)=-8+2 x \) First, simplify the left side: \[ 5 - 2x + 3 = -8 + 2x \] Combine like terms on the left side: \[ 8 - 2x = -8 + 2x \] Now, add \( 2x \) to both sides: \[ 8 = 4x - 8 \] Add 8 to both sides: \[ 16 = 4x \] Divide by 4: \[ x = 4 \] Graph this on a number line as a point indicating \( x = 4 \). And there you have it! Solutions are \( x = 2 \) for part a and \( x = 4 \) for part b. Happy graphing!

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