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

asked Jun 12, 2019 75.9k views

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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

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

Mzrnsh answered Jun 17, 2019

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