15a =6a - 90
Move all the numbers with variables to one side
15a - (6a) = 6a -(6a) -90
9a = -90
9a/9 = -90/9
a = -9
Hope this helps
Answer:
x=4 and y=4
Step-by-step explanation:
From first function we have:

And from the second one:

Substitute them:

Answer:
Ø
Step-by-step explanation:
This expression is unfactorable with rational numbers. I apologize.
Though, I am joyous to assist you anytime.
Answer:
4
Step-by-step explanation:
x=-6
Fill in for x
(-6)2/(-6)+3
-12/-3
=4