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8x-5y=-1/* 3
-10x-15y=-20
24-15y=-3
10x+24=-20-3
10x=-23+24
10x=1/1o
x=jedna dziesiąta
8x-5y=-1
-8x-12y= (-16)
8x-5y=-1
-17y=-17/:(-17)
y=1
2x+3y=4/*5
8x-5y=-1/*3
10x+15y=20
24x-15y=(-3)
34x=17/:34
x=0.5
y=1
x=0.5