Question

Verify the following:
(a) 18 x [7+(-3)] = [18 x 7] + [18*(-3)​

Answer 1

LHS:

$18 \times (7 - 3) \\ = 18 \times 4 \\ = 72$

RHS:

$(18 \times 7) + (18 \times - 3) \\ = 126 - 54 \\ = 72$

Therefore, we see that LHS = RHS. Hence, verified.

Answer 2

* is considered as multiplies by

According to BODMAS

First we should solve bracket.

LHS

7+(-3) = 7-3 = 4.

18 × 4 = 72 .

RHS

18 × 7 = 126.

18× (-3) = - 54.

126 +(-54) = 126 -54 => 72

So, RHS = LHS.

Thus, it is verified.