Question

By how much does I exceed 2x − 3y − 4?
(a) 2x − 3y − 5
(b) 2x − 3y − 3
(c) 5 − 2x + 3y
(d) none of these

Answer 1

(c) 5 − 2x + 3y

1 exceeds 2x − 3y − 4.

∴1 $-$ (2x − 3y − 4) = 1 $-$2x + 3y + 4
= 5 $-$ 2x + 3y

∴ 1 exceeds 2x − 3y − 4 by 5 $-$ 2x + 3y.