Question

2) Simplify the following.
(i) 13+5+ [100+ 10+{15x2(13-9-5-1)}]
(ii) {18 + 9(4-2) + 5}
(iii) [297 + 3+{4 x 3(20 - 36+5 - 2)}]​

Answer 1

soln: 13+5+[100+10+{15×2(13-9-5-1)}]

= 18+[110+{30(13-15)}]

= 18+[110+30×(-2)]

= 18+110-60

= 127-60

=68