x+2x+15+x=-15

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Solution for x+2x+15+x=-15 equation:


Simplifying
x + 2x + 15 + x = -15

Reorder the terms:
15 + x + 2x + x = -15

Combine like terms: x + 2x = 3x
15 + 3x + x = -15

Combine like terms: 3x + x = 4x
15 + 4x = -15

Solving
15 + 4x = -15

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 4x = -15 + -15

Combine like terms: 15 + -15 = 0
0 + 4x = -15 + -15
4x = -15 + -15

Combine like terms: -15 + -15 = -30
4x = -30

Divide each side by '4'.
x = -7.5

Simplifying
x = -7.5

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