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2x-x=-5-3
x=-8
6x-7=5x+8
6x-5x=8+7
x=15
7x+8=5x+6
7x-5x=6-8
2x=-2
x=-1
8x+9=10x-11
8x-10x=-11-9
-2x=-20
-x=-10
x=10
2(x+3)=3(x-1)
2x+6=3x-3
2x-3x=-3-6
-x=-9
x=9
5(x-2)-2=3-4(x-2)
5x-10-2=3-4x+8
5x+4x=3+8+10+2
9x=23 tu nie wychodzi