Question

What numbers should go in the boxes to complete the calculation below?

2(? - 4x) + ?(3x - 1) = 2(2x + 3)

Answer 1

2(a - 4x) + b(3x - 1) = 4x + 6

-8 + 3b = 4 2a - b = 6

3b = 12 2a - 4 = 6

b = 4 2a = 10

a = 5