Answer:
2A/h - b = c
Step-by-step explanation:
A = 1/2(b + c)h
Multiply each side by 2
2A = (b + c)h
Divide each side by h
2A/h = (b + c)h/h
2A/h = (b + c)
Subtract b from each side
2A/h -b = (b-b + c)
