SOLUTION: 3(a – b) = 15 4a = b + 1

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Question 1119517: 3(a – b) = 15
4a = b + 1
Answer by Boreal(15235) About Me  (Show Source):
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the second equation is b=4a-1
substitute into the first for b after distributing
3a-3b=15
3a-3(4a-1)=15
distribute
3a-12a+3=15
-9a=12
a=-4/3
4a=-16/3
b=-19/3
(-4/3, -19/3) ANSWER
check in first equation
3(-4/3-(-19/3))=3(15/3)=15