Compute the result of (−5 + 8) × (−3).

Compute the result of $(- 5 + 8) \times (- 3)$ .

easy 2 marks Class 7 · Mathematics · Integers

Answer

−9

The correct answer is −9 — Multiply the result by the integer in the second parentheses: $3 \times (- 3) = - 9$ .

Add the integers inside the first parentheses: $(- 5 + 8) = 3$ because adding a negative is equivalent to subtraction.
Multiply the result by the integer in the second parentheses: $3 \times (- 3) = - 9$ .

Common mistake: Forgetting that the product of two negatives is positive

Concept tested: Integer addition and multiplication