rozwiąż równanie 3(2x-7)-(7x-13)=-10
3(2x-7)-(7x-13)=-10
6x-21-(7x-13)=-10
6x-21-7x+13+10=0
-x=2/*(-1)
x=-2
6x-21-7x+13=-10
6x-7x=-10-13+21
-x=-2 /*(-1)
x=2
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3(2x-7)-(7x-13)=-10
6x-21-(7x-13)=-10
6x-21-7x+13+10=0
-x=2/*(-1)
x=-2
3(2x-7)-(7x-13)=-10
6x-21-7x+13=-10
6x-7x=-10-13+21
-x=-2 /*(-1)
x=2