3x+5x=-30-4x

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Solution for 3x+5x=-30-4x equation: 


Simplifying
3x + 5x = -30 + -4x

Combine like terms: 3x + 5x = 8x
8x = -30 + -4x

Solving
8x = -30 + -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.
8x + 4x = -30 + -4x + 4x

Combine like terms: 8x + 4x = 12x
12x = -30 + -4x + 4x

Combine like terms: -4x + 4x = 0
12x = -30 + 0
12x = -30

Divide each side by '12'.
x = -2.5

Simplifying
x = -2.5

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