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-3x = 2x - 10
-3x - 2x = -10
-5x = -10 /: (-5)
x = 2
c)
10 = 4 - 2x
2x = 4 - 10
2x = -6 / : 2
x = -3
-5x= -10 / : (-5)
x=2
b) 10-4= -2x
6= -2x / : (-2)
x= -3