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USPshnik [31]
3 years ago
9

Solve the system by substitution 5x+3y=8 3x+y=8

Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0
3x+y=8
y=8-3x

5x+3(8-3x)=8
5x+24-9x=8
-4x+24=8
-4x=-16
x=4

5x+3y=8
5(4)+3y=8
20+3y=8
3y=-12
Y=-4

5x+3y=8
5(4)+3(-4)=8
20+-12=8
8=8
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