Question
Solve for \( w \). \[ \frac{4}{5}=\frac{7}{w+2} \] Simplify your answer as much as possible. \( w=\square \)
Ask by Ellis Boone. in the United States
Jan 24,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
\( w = \frac{27}{4} \)
Solution
To solve for \( w \) in the equation:
\[
\frac{4}{5} = \frac{7}{w + 2}
\]
**Step 1:** Cross-multiply to eliminate the fractions.
\[
4(w + 2) = 5 \times 7
\]
**Step 2:** Distribute and simplify.
\[
4w + 8 = 35
\]
**Step 3:** Subtract 8 from both sides.
\[
4w = 35 - 8
\]
\[
4w = 27
\]
**Step 4:** Divide both sides by 4 to solve for \( w \).
\[
w = \frac{27}{4}
\]
So, the solution is:
\[
w = \frac{27}{4}
\]
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Bonus Knowledge
To solve for \( w \), we start by cross-multiplying. So we have: \[ 4(w + 2) = 7 \times 5 \] This simplifies to: \[ 4w + 8 = 35 \] Now, subtract 8 from both sides: \[ 4w = 27 \] Next, divide both sides by 4: \[ w = \frac{27}{4} \] Thus, the final answer is: \( w = \frac{27}{4} \)