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6x+6=5x+10
6x-5x=10-6
x=4
x/4+2=7
x/4=7-2 /*4
x=20
x/2=x+3/3 /*2
x-2x=2
-x=2
x=-2
4(x-5)=5(x-2)
4x-20=5x-10
4x-5x=-10+20
-x=10
x=-10
Polecam się na przyszłość PCTS09
6x+6=5x+10 / -6
6x=5x+4 / -5x
x=4
x/4+2=7 /-2
x/4=5/ *4
x=20
x/2=x+3/3
x/2=x+1/*2
x=2x+2/-2x
-x=2/ *(-1)
x=-2
4(x-5)=5(x-2)
4x-20=5x-10/+10
4x-10=5x/-4x
x=-10