3x + 2 = 2x - 10

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ok. so first you subtract  3x from both sides  to make it 2=-x - 10. now add 10 to both sides to make it 12=-x.now to make the x positive, multilpy both sides by -1 to make it -12=x. if you check it it is good. hope this helps!

x=-12

3x + 2 = 2x - 103x  + 2 - 2 = 2x - 10 - 23x = 2x -123x - 2x = 2x - 2x - 12x = -12