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December 10, 2016
Posted by **Richard** on Thursday, October 11, 2012 at 4:42pm.

6a+2b = -48

-6a+b = 57

What is the solution set ( , )?

- Algebra -
**bobpursley**, Thursday, October 11, 2012 at 5:03pmadd the equations.

3b=9

b=3

Now for a, by elimination

multipy the second equation by -2

12a-2b=-114

add now the first and this equation, giving

18a=-162

b=9