Question

9×(-13)+9×(-7)
$54 {?}^{?}$
​

Answer 1

Step-by-step explanation:

Using the Distributive Law of Multiplication [(a×b)+(a×c)=a(b+c)]

Let,

a = 9, b = -13, c = -7

Then,

=9×(−13)+9×(−7)

The above equation can be written as,

=9×{(−13)+(−7)}

=9×{(−13−7)}

=9×{−20}

=−180