Answer:
(2A-ah)/h =b
Explanation:
divide both sides by h, now the equation is : A/h = 1/2(a+b)
distribute, now the equation is : A/h = 1/2a + 1/2b
subtract 1/2a both sides, now the equation is : A/h - 1/2a = 1/2b
multiply both sides by 2 (to make the coefficient on b = 1), now the equation is : 2A/h - a = b
rewrite "a" so that it has the same denominator as the fraction 2A/h (aka multiply a with h, then divide that by h):
2A/h - ah/h = b
make it pretty (simplify):
(2A-ah)/h = b
lmk if u got questions :>