10x - 15x + 5 = -45 + 40
Combine like terms:
-5x + 5 = -5
Get the x term alone (subtract 5 from both sides):
-5x = -10
Divide both sides by -5
x = 2
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If 40 plus x equals 25 then x is equal to -15.
x+30 = 3x-50 x-3x = -50-30 -2x = -80 x = 40
3x + 2x = 40 5x = 40 x = 8
5
4x + 10 + 3x = 40 - 3x 4x + 10 + 3x + 3x = 40 20x = 40 x = 2