Question

By how much does I exceed 2x − 3y − 4?

विकल्प

• 2x − 3y − 5

• 2x − 3y − 3

• 5 − 2x + 3y

• none of these

Answer 1

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.