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(x+5)-1 = 2(x-1) (w sumie to ten pierwszy nawias jest niepotrzebny)
x+5-1 = 2x-2
x+4 = 2x-2 /-x
4 = x-2 /+2
6 = x
(x+5)-1= 2(x-1)
x+5-1=2x-2
2x-2=x+4
2x-x= 4+2
x=6
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(x+5)-1 = 2(x-1) (w sumie to ten pierwszy nawias jest niepotrzebny)
x+5-1 = 2x-2
x+4 = 2x-2 /-x
4 = x-2 /+2
6 = x
(x+5)-1= 2(x-1)
x+5-1=2x-2
2x-2=x+4
2x-x= 4+2
x=6