Answer:
The hierarchy is starting by the parenthesis, followed by any multiplications or divisions and ultimately the additions and subtractions.
Step-by-step explanation:
First operation
1. (1/5+1/2)=(2/10+5/10)= 7/10
2. (7/10)^2= 49/100
4. (49/100) + (3/50)= (49/100 + 6/100) = 55/100
Second operation
We start by the numerator
1. (18 - 4^2 +2) = 18 - 16 +2 = 4
2. 4*2 = 8
Following with denominator
1. 1/4*12= 1/48
When we divide a number by a fraction we have to make use of the following rule (a/b)/(c/d)=(a*d)/(b*c)
Hence: (8)/(1/48) = 8*48 / 1 = 8*48 =384
