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OpenStudy (anonymous):
x-y=11 2x+y=19 solve by Elimination
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OpenStudy (anonymous):
Help me please
myininaya (myininaya):
Add the equations together
myininaya (myininaya):
2x+x-y+y=11+19
myininaya (myininaya):
3x+0=30 3x=30 x=10
myininaya (myininaya):
x-y=11 10-y=11 -y=11-10 -y=1 y=-1
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