SOLUTION: I am trying to help my grandson with his algebra. The equation is 7(6-2a)=5(-3a+1). this is my work but I know it is wrong. Please help me. 7(6-2a+2a) + 5(-3a+1+2a) 7(6)=5(-a

Algebra ->  Linear-equations -> SOLUTION: I am trying to help my grandson with his algebra. The equation is 7(6-2a)=5(-3a+1). this is my work but I know it is wrong. Please help me. 7(6-2a+2a) + 5(-3a+1+2a) 7(6)=5(-a      Log On


   

Question 367024: I am trying to help my grandson with his algebra. The equation is
7(6-2a)=5(-3a+1).
this is my work but I know it is wrong. Please help me.
7(6-2a+2a) + 5(-3a+1+2a)
7(6)=5(-a+1
7(6-1)=5(-a)
35=-5a
a = -7
where did I go wrong?
Found 2 solutions by Fombitz, rfer:
Answer by Fombitz(32388) About Me  (Show Source):
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
multiply through first
7(6-2a)=5(-3a+1)
42-14a=-15a+5
add 15a to both sides
and subtract 42 from both sides
a=-37
Does that help?
Bob