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2x=2
x=1
3x+1=2x+2
3x-2x=2-1
x=1
-3x-2=2x-7
-3x-2x=-7+2
-5x=-5
x=1
2x+7=-2
2x=-2-7
2x=-9
x=-4,5
-2x=5
x=-2,5
12x+7=9x+10
12x-9x=10-7
3x=3
x=1
2x+12=30-3x
2x+3x=30-12
5x=18
x=3 3/5 [18/5]
6x-[x-1]=6
6x-x+1=6
5x=5
x=1
3x-2=1/2x+3
3x-1/2x=3+2
2 1/2x=5
x=2
2x+3[3x-5]-10=5x+5
2x+9x-15-10=5x+5
2x+9x-5x=5+10+15
6x=30
x=5
-1,5x+2=9,5
-1,5x=7,5
x=-5