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b. 6x=-18
x= -3
c.2x-6+5x+5=6
7x-1=6
7x=7
x=1
2x-3x=-4+5
-1x =1/-1
x =-1
b.6x+12=-6
6x =-6-12
6x =-6/6
x =-1
c.2x-6+5x+5=6
2x+5x=6+6-5
7x =7/7
x=1