Metoda przeciwnych współczyników
1. 6y-13=-5x
18y+1=7x
2 3(x+1)= 3+2y
2(y+1)= 2 +3x
6y-13=5x 3(x+1)=3+2y
18y+1=7x 2(y+1)=2+3x
6y-5x=13/(-3) 3x+1=3+2y
18y-7x=-1 2y+2=2+3x
-18y+15=-39 3x-2y=3-3
18y-7x=-1 -3x+2y=2-2
8x=-40/8 0=0
x=-5
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6y-13=5x 3(x+1)=3+2y
18y+1=7x 2(y+1)=2+3x
6y-5x=13/(-3) 3x+1=3+2y
18y-7x=-1 2y+2=2+3x
-18y+15=-39 3x-2y=3-3
18y-7x=-1 -3x+2y=2-2
8x=-40/8 0=0
x=-5