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2x+y=2|*(-2)
4x-3y=1
-4x-2y=-4
-5y=-3
y=⅗
teraz liczymy x
2x+⅗=2
2x=1⅖
x=7/10
2x + y = 2 /*(-2)
4x - 3y = 1
-4x - 2y = -4
-5y = -3
4x - 3y = 1
y = 0.6
4x - 3 x 0.6 = 1
4x - 1.8 = 1
y = 0.6
4x = 2.8
y = 0.6
x = 0.7
y = 0.6