SOLUTION: 4ax+by=11ab 8ax-5by=ab solve for x and y

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Question 198075: 4ax+by=11ab
8ax-5by=ab solve for x and y
Answer by arallie(162) About Me  (Show Source):
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4ax%2Bby=11ab and 8ax-5by=ab
mult by 2 then mult by -1
8ax%2B2by=22ab and 5by-8ax=-ab
add and solve
7by=21ab=y=3a
substitute and solve
4ax%2Bb%283a%29=11ab
4ax=8ab=x=2b
Answer
x=2b%2Cy=3a