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NEED HELP NOW! Use the substitution method to solve the system of equations. choose the correct ordered pair. x+y=12 -x=-y-10

NEED HELP NOW! Use the substitution method to solve the system of equations. choose the correct ordered pair. x+y=12 -x=-y-10
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NEED HELP NOW! Use the substitution method to solve the system of equations. choose the correct ordered pair.

x+y=12  
-x=-y-10

User Fredlahde
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x+y=12\\y=x+10\\\\x+(x+10)=12\\2x+10=12\\2x=2\\x=1\\\\y = x+10\\y=1+10\\y=11\\\\x+y=12\\1+11=12\\12=12\\\\x=1\\y=11

User Mzrnsh
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