Question

Question 124 (iv)

Evaluate the following, using distributive property.
$68\times (-17)+(-68)\times 3$

Answer 1

$68\times (-17)+(-68)\times 3=68\times (-17)-68\times 3$
Taking 68 as common,
$=68\times (-17-3)\left[\begin{array}{cc}\because \text{a}\times \text{b + a}\times \text{c = a}\times \text{(b + c)}& \\ \text{i.e. using distributive property}& \end{array}\right]=68\times (-20)=-1360$