X+X+20=3X-40

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Solution for X+X+20=3X-40 equation: 


Simplifying
X + X + 20 = 3X + -40

Reorder the terms:
20 + X + X = 3X + -40

Combine like terms: X + X = 2X
20 + 2X = 3X + -40

Reorder the terms:
20 + 2X = -40 + 3X

Solving
20 + 2X = -40 + 3X

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-3X' to each side of the equation.
20 + 2X + -3X = -40 + 3X + -3X

Combine like terms: 2X + -3X = -1X
20 + -1X = -40 + 3X + -3X

Combine like terms: 3X + -3X = 0
20 + -1X = -40 + 0
20 + -1X = -40

Add '-20' to each side of the equation.
20 + -20 + -1X = -40 + -20

Combine like terms: 20 + -20 = 0
0 + -1X = -40 + -20
-1X = -40 + -20

Combine like terms: -40 + -20 = -60
-1X = -60

Divide each side by '-1'.
X = 60

Simplifying
X = 60

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