Question 2

Simplify the following expressions by collecting like terms. The expressions contain both positive and negative terms. Take care over signs.

(a) \( 3x - 7 + 4x + 2\) (b) \( 7y + 3 - 9y - 8\)
(c) \( 2x - 6 - 8x - 7\) (d) \( 12a - 3b - 7a + b - 4\)
(e) \( 10x - 5 + 2x + 8 - 3x\) (f) \( 7x + 12 - 4x - 5 - 2x + 1\)
(g) \( 8x - 8 + x - 6x + 10 + 4x\) (h) \( 7 - 10x + 5 + 6x - 8\)
(i) \( 3x - 6 - 8x + 2x - 7 + 4x\) (j) \( 5y + 2x - 3 - 8y + 4x - 2y - 4\)
(k) \( 2x - 3y + 5x - 4 +7y - 8\) (l) \( 4y - 3x + 8z - 3 - 2z + 5x - 8y - 9\)