Answer:
49/5
Step-by-step explanation:
x+x+x+x+x+30=79
5x+30=79
5x=49
x=49/5
I believe the answer is C) 0
9a/5b is the answer, the (-7) cancel out.
Answer:


Step-by-step explanation:
Given


Required
Solve
Substitute
in 

Open bracket

Collect like terms


Divide both sides by 2

Substitute
in 


