Rozwiąż równanie 3x-1 2
7x+1 = 5
2*(7x+1)=5(3x-1)
14x+2=15x-5
15x-14x=2+5
x=7
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2*(7x+1)=5(3x-1)
14x+2=15x-5
15x-14x=2+5
x=7