Question

Find the missing value: $(-27)\times (-31)=(-31)\times .....$

• A. $31$
• B. $(-31)$
• C. $27$
• D. $(-27)$

Answer 1

The correct option is D $(-27)$

Integers are commutative under multiplication. i.e. $a\times b=b\times a.$
$\therefore (-27)\times (-31)=(-31)\times (-27)$.