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Solve system using eliminations 2x+4y=22 2x-2y=-8

Solve system using eliminations 2x+4y=22 2x-2y=-8
asked 150k views
5 votes
Solve system using eliminations
2x+4y=22
2x-2y=-8

asked
User Brans Ds
by
8.6k points

1 Answer

3 votes

2x+4y=22 \\ 2x-2y=-8 \ \ \ |* (-1) \\ \\ 2x+4y=22 \\ \underline{-2x+2y=8} \\ 2x-2x+4y+2y=22+8 \\ 6y=30 \ \ \ |/ 6 \\ y=5 \\ \\ 2x-2y=-8 \\ 2x-2 * 5=-8 \\ 2x-10=-8 \ \ \ |+10 \\ 2x=2 \ \ \ |/ 2 \\ x=1 \\ \\ \boxed{(x,y)=(1,5)}
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User Neil Slater
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