Graph this system of equations and solve. 2x+6y=24 7x+3y=−6

i don't understand this problem
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1 Answer

line 1: 2x+6y=24

line 2: 7x+3y=-6, or -14x -6y=+12

add line 1 + line 2:(2x-14x) +(6y-6y)=36

-12x=36

x=-3

line 1...-6 +6y=24

6y=30, y=5
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