W Załączniku ;) proszę najszybciej ;3
x+y=7
x-y=2
x=7-y
7-y-y=2
-2y=-5
y=2,5
x=7-2,5
x=4,5
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x+y=7
x-y=2
x=7-y
7-y-y=2
x=7-y
-2y=-5
x=7-y
y=2,5
x=7-2,5
y=2,5
x=4,5
y=2,5