Question

Solve for b2: A=1/2(b1+b2)h

Answer 1

`b_(2)` =
`(2A)/(h)` -
`b_(1)`

multiply both sides by 2 to eliminate the fraction

(
`b_(1)` +
`b_(2)` )h = 2A

divide both sides by h

`b_(1)` +
`b_(2)` =
`(2A)/(h)`

subtract
`b_(1)` from both sides

`b_(2)` =
`(2A)/(h)` -
`b_(1)`