X+3x-20=-15

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Solution for X+3x-20=-15 equation: 


Simplifying
X + 3x + -20 = -15

Reorder the terms:
-20 + X + 3x = -15

Solving
-20 + X + 3x = -15

Solving for variable 'X'.

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

Add '20' to each side of the equation.
-20 + X + 20 + 3x = -15 + 20

Reorder the terms:
-20 + 20 + X + 3x = -15 + 20

Combine like terms: -20 + 20 = 0
0 + X + 3x = -15 + 20
X + 3x = -15 + 20

Combine like terms: -15 + 20 = 5
X + 3x = 5

Add '-3x' to each side of the equation.
X + 3x + -3x = 5 + -3x

Combine like terms: 3x + -3x = 0
X + 0 = 5 + -3x
X = 5 + -3x

Simplifying
X = 5 + -3x

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