Question

A=1/3h(r+b)for r what’s the answer?

Answer 1

`\large\boxed{r=(3A-hb)/(h)}`

Explanation:

`A=(1)/(3)h(r+b)\qquad\text{multiply both sides by 3}\\\\3A=h(r+b)\qquad\text{use distributive property}\\\\3A=hr+hb\qquad\text{subtract hb from both sides}\\\\3A-hb=hr\qquad\text{divide both sides by }\ h\\eq0\\\\(3A-hb)/(h)=r`