Answer:
b2 = -b1 × -2h + 2A
Step-by-step explanation:
okay lets see
so we have A = b1 + b2/2 × h
so to get rid of the fraction multiply everything by 2
and now your equation will look like this:
2A = b1 + b2 × 2h
subtract b2 on both sides of the equal sign
-b2 + 2A = b1 × 2h
now subtract 2A from both sides
-b2 = b1 × 2h - 2A
and to get -b2 positive divide everything by -1
b2 = -b1 × -2h + 2A
