Mathematics for IGCSE & O level - Equations (Section 3 - No. 48)

Solve: 20x - 3(x - 4) = 30 - x

3/2

1/2

Expand the brackets: 20x - 3x + 12 = 30 - x. Simplify: 17x + 12 = 30 - x. Combine like terms: 18x = 18. Divide by 18: x = 1.