solve system of equations using addition method x-y=6 -3y=x+22

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1 Answer

line 1: x-y=6   or y=x-6

line 2: -3y=x+22

-3y=-3*(x-6)=x+22

-3x+18=x+22

-4x=22-18=4

x=-1

y=x-6=-7
by

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I need to solve the system by using the addition method
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