SOLUTION: A-2b=9 2a+3b=4

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Question 1064771: A-2b=9
2a+3b=4
Answer by Boreal(15235) About Me  (Show Source):
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a-2b=9
2a+3b=4; multiply top by -2 to eliminate a
-2a+4b=-18
7b=-14
b=-2
substitute into first equatio
a+4=9
a=5
check in second equation
2(5)+3(-2)=4 checks
(5, -2)