x+3+1=15

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Solution for x+3+1=15 equation: 


Simplifying
x + 3 + 1 = 15

Reorder the terms:
3 + 1 + x = 15

Combine like terms: 3 + 1 = 4
4 + x = 15

Solving
4 + x = 15

Solving for variable 'x'.

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

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

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

Combine like terms: 15 + -4 = 11
x = 11

Simplifying
x = 11

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