Question 164167
A=1/2h(a+b) solve for b
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"Solve for" means to get b on one side of the = by itself.
A=1/2h(a+b)
Multiply by 2
2A = h(a+b)
2A = ha + hb
hb = 2A - ha
b = (2A - ha)/h
Or,
b = (2A/h) - a
Both are correct.