Question

Solve B = –4(c – 2d) for d.

Answer 1

B = -4(c - 2d) --distribute the -4 through the parenthesis)
B = -4c + 8d (add 4c to both sides)
B + 4c = -4c+ 4c + 8d (combine like terms)
B + 4c = 8d (now divide by 8)
(B + 4c)/8 = d <-- your answer