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-3x-2x=-10
-5x=-10 | :(-5)
x=2
____
b) 2x - 2 = 7 - x
2x+x=7+2
3x=9 |:3
x=3
_____
c) 10 = 4 -2x
2x=4-10
2x=-6 |:2
x=-3
-3x-2x=-10
-5x=-10
x=2
b) 2x - 2 = 7 - x
2x+x=7+2
3x=9
x=3
c) 10 = 4 -2x
2x=4-10
2x=-6
x=-3