Question 328017
You need to apply the "order of operations" (PEMDAS):
.
a) Evaluate 18 - 7 ÷ (1/5 + 1/2) 
.
18 - 7 ÷ (1/5 + 1/2)
18 - 7 ÷ (2/10 + 5/10)
18 - 7 ÷ (7/10)
18 - 7 * (10/7)
18 - 10
8
.
b) (0.56 - 0.37) x 3
.
(0.56 - 0.37) x 3
0.19 x 3
0.57
.
c) Evaluate 4 x 11 - 52
.
4 x 11 - 52
44 - 52
-8
. 
d) (42 - 6) ÷ 2
.
(42 - 6) ÷ 2
36 ÷ 2
18