x+3x+15=121

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Solution for x+3x+15=121 equation:


Simplifying
x + 3x + 15 = 121

Reorder the terms:
15 + x + 3x = 121

Combine like terms: x + 3x = 4x
15 + 4x = 121

Solving
15 + 4x = 121

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 = 121 + -15

Combine like terms: 15 + -15 = 0
0 + 4x = 121 + -15
4x = 121 + -15

Combine like terms: 121 + -15 = 106
4x = 106

Divide each side by '4'.
x = 26.5

Simplifying
x = 26.5

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