Question

If a=bc-d, find d given that a=-16, b=3, c=5

Answer 1

d = 31

Explanation:

a = bc - d

Substitute a = -16, b = 3 and c = 5:

-16 = (3)(5) - d

-16 = 15 - d subtract 15 from both sides

-16 - 15 = 15 - 15 - d

-31 = -d change the signs

31 = d