wha is 4x+3y=30 and 2x+2y=15

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Mar 29th, 2015

The solution is x= 71/2 or 7.5 and y=0

Double the second equation: 4x + 4y = 30

subtract equation 1 from this: y=0

So 2x + 0 =15

2x =15

x=15/2 = 71/2

Mar 29th, 2015

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Mar 29th, 2015
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Mar 29th, 2015
Sep 21st, 2017
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