Asked by Richard

solve by elimination:

6a+2b = -48
-6a+b = 57

What is the solution set ( , )?
Answered by bobpursley
add 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
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