SOLUTION: 2x+3y=7 x-3y=8
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Question 647943
:
2x+3y=7
x-3y=8
Answer by
rfer(16322)
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2x+3y=7
x=3y+8
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2(3y+8)+3y=7
6y+16+3y=7
9y=7-16
9y=-9
y=-9/9
y=-1
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2x+3*-1=7
2x-3=7
2x=7+3
2x=10
x=10/2
x=5
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x-3y=8
5-3*-1=8
5+3=8