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6x+4y=20
10x-15x-5y+3y=2-2
-5x-2y=0
2(5x-1)+3y=5(3x+y)+2
6x-3+4y-8=9/+11
10x-2+3y=15x+5y+2/+2 -15x -5y
6x+4y=20
-5x-2y=4/*2
6x+4y=20
-10x-4y=8
-4x=12/:(-4)
6x+4y=20
x=-3
6*(-3)+4y=20
x=-3
-18+4y=20/+18
x=-3
4y=38/:4
x=-3
y=9,5
2(5x-1)+3y=5(3x+y)+2
6x-3+4y-8=9
10x-2+3y=15x+5y+2
6x-11+4y=9
10x-2+3y=15x+5y+2
6x+4y=20
-5x-2y=4 /*2
6x+4y=20
-10x-4y=8
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-4x=28
x=-7
6x+4y=20
6*(-7)+4y=20
-42+4y=20
4y=62 /4
y=15,5