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3x - 3=3
3x=6
x=2
2) 2(x+1)=18
2x+2=18
2x = 16
x = 8
3) 5(x-4)=15
5x-20= 15
5x = 35
x=7
4) 7(x+2)=21
7x+14=21
7x =7
x=1
5) (x+2)+3(x-1)=11
x+2+3x-3=11
4x=12
x=3
6) 3(x-2)+2(x-1)=27
3x-6+2x-2=27
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