Answer:
x represents the number of shirts he bought
12m; if one side is 9m then that means 42 - 9 - 9 would yield the size of the two remaining sides together. 42-18=24 24 divided between the two sides left means each remaining side had to be 12m
Answer:
a(a + 3b)
Step-by-step explanation:
a² + 2ab + ab
a² + 3ab
a(a + 3b)
These are the equations given:
31=B+J
B=2J+4
So you substitute B=2J+4 into 31=B+J
31=2J+4+J
Solve
31-4=3J+4-4
27=3J
27/3=3J/3
9=J
Jake has 9 cd's.