x+3x+5x=-5x-21

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Solution for x+3x+5x=-5x-21 equation:


Simplifying
x + 3x + 5x = -5x + -21

Combine like terms: x + 3x = 4x
4x + 5x = -5x + -21

Combine like terms: 4x + 5x = 9x
9x = -5x + -21

Reorder the terms:
9x = -21 + -5x

Solving
9x = -21 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
9x + 5x = -21 + -5x + 5x

Combine like terms: 9x + 5x = 14x
14x = -21 + -5x + 5x

Combine like terms: -5x + 5x = 0
14x = -21 + 0
14x = -21

Divide each side by '14'.
x = -1.5

Simplifying
x = -1.5

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