x+3x=-4x+-20

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Solution for x+3x=-4x+-20 equation: 


Simplifying
x + 3x = -4x + -20

Combine like terms: x + 3x = 4x
4x = -4x + -20

Reorder the terms:
4x = -20 + -4x

Solving
4x = -20 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
4x + 4x = -20 + -4x + 4x

Combine like terms: 4x + 4x = 8x
8x = -20 + -4x + 4x

Combine like terms: -4x + 4x = 0
8x = -20 + 0
8x = -20

Divide each side by '8'.
x = -2.5

Simplifying
x = -2.5

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