# Chapter 1 - Section 1.5 - Problem Solving and Using Formulas - Exercise Set: 51

$b=\dfrac{2A}{h}$

#### Work Step by Step

Multiply $2$ to both sides: $2 \cdot A = 2 \cdot \dfrac{1}{2}bh \\2A = bh$ Divide by $h$ on both sides: $\dfrac{2A}{h}=b \\b=\dfrac{2A}{h}$

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