(5x+4y=12)(3x+4y=20)
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1 Answer

5x+4y=12,

3x+4y=20.

Subtract the 2nd equation from the 1st:

2x=-8, so x=-4.

Therefore 4y=20-3x=20+12=32, y=8.

Answer is x=-4 and y=8.

 

by Top Rated User (815k points)

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