Answer:
p=36
a=3*
*18
Step-by-step explanation:
p=sum of all sides
a=(3
*
)/2
Parentheses are used to identify which numbers you should add,multiply .ect first. So If i had
12-(3+1)=x
then you would want to solve 3+1 before you subtract 12.
Answer:
when u multiple it it us 100 but when I added it was 21
so it is 100 or 21 sorry if it is not right
D. X = 10
6x-20= 40
6x=40+20
6x=60
X=10