rozwiąż równanie:
a) 2x-1/x+1=2/x
b) x-3/x=5-x/x+1
2x-x+1=2x
2x-x-2x=-1
-x=-1 /(-1)
x=1
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a) 2x-1/x+1=2/x
2x-x+1=2x
2x-x-2x=-1
-x=-1 /(-1)
x=1