x+x+2x-15=0

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Solution for x+x+2x-15=0 equation:


Simplifying
x + x + 2x + -15 = 0

Reorder the terms:
-15 + x + x + 2x = 0

Combine like terms: x + x = 2x
-15 + 2x + 2x = 0

Combine like terms: 2x + 2x = 4x
-15 + 4x = 0

Solving
-15 + 4x = 0

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 = 0 + 15

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

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

Divide each side by '4'.
x = 3.75

Simplifying
x = 3.75

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