If x plus 2x is 5 more than y plus 2y then x-y equals?

Answer 1

Call the unknown value of (x - y) d. Then x = y + d; from the problem statement,

y + d + 2(y + d) +5 = y + 2y; expanding yields

y + d + 2y + 2d + 5 = y + 2y; (y + 2 y) can be subtracted from both sides and terms in d collected to result in 3d + 5 = 0; 3d = -5; d = -5/3.