Question

I need to simplify the circled questions and explain how I got my answers.

Answer 1

7) 2^3 / 2(3+5)
8/2(5)
4/5
.8

10) 8(4-1) x 4
8(3) x 4
24x4
96

12) 9^2 (1+1) + 7
81 (2) + 7
162+7
169

14) 8^2 -1 +4 /2
64-1+4/2
67/2
33.5

18) 11^2 + 2^3 -3 x 4
121 + 8 - 3 x 4
129 -12
117

Answer 2

#7 2^3÷2(3+2) 2^2×(3+2) 4×5 20