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3x = x - 10
3x - x = -10 (we put all the Xs on one side)
2x = -10 (we simplify 3x - 1x)
x = -10/2 (we isolate x on one side by dividing two out of both sides)
x = -5
3x-4x=12 that means -x equals 12 so x equals -12
3x=18 x=18/3 x=6
If x equals 8, then 3x equals 24. 24-x would equal 16.
If 3x - 9 = -6 then 3x must equal 3. Therefore x = 1 !
If: 3x-7 = 5x+13 Then: x = -10