X+X+10=-2-X+20

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Solution for X+X+10=-2-X+20 equation: 


Simplifying
X + X + 10 = -2 + -1X + 20

Reorder the terms:
10 + X + X = -2 + -1X + 20

Combine like terms: X + X = 2X
10 + 2X = -2 + -1X + 20

Reorder the terms:
10 + 2X = -2 + 20 + -1X

Combine like terms: -2 + 20 = 18
10 + 2X = 18 + -1X

Solving
10 + 2X = 18 + -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
10 + 2X + X = 18 + -1X + X

Combine like terms: 2X + X = 3X
10 + 3X = 18 + -1X + X

Combine like terms: -1X + X = 0
10 + 3X = 18 + 0
10 + 3X = 18

Add '-10' to each side of the equation.
10 + -10 + 3X = 18 + -10

Combine like terms: 10 + -10 = 0
0 + 3X = 18 + -10
3X = 18 + -10

Combine like terms: 18 + -10 = 8
3X = 8

Divide each side by '3'.
X = 2.666666667

Simplifying
X = 2.666666667

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