Question

A = 1/2bh, solve for b

Answer 1

a = 1/2bh, solve for b

that means -----> isolate the variable b

so

`\begin{gathered} a=(1)/(2)\cdot b\cdot h \\ \text{Multiply by 2 both sides} \\ 2a=b\cdot h \\ \text{Divide by h both sides} \\ b=(2a)/(h) \end{gathered}`

therefore

the answer is

b=(2a)/h