x+4=13-x

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Solution for x+4=13-x equation:


Simplifying
x + 4 = 13 + -1x

Reorder the terms:
4 + x = 13 + -1x

Solving
4 + x = 13 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
4 + x + x = 13 + -1x + x

Combine like terms: x + x = 2x
4 + 2x = 13 + -1x + x

Combine like terms: -1x + x = 0
4 + 2x = 13 + 0
4 + 2x = 13

Add '-4' to each side of the equation.
4 + -4 + 2x = 13 + -4

Combine like terms: 4 + -4 = 0
0 + 2x = 13 + -4
2x = 13 + -4

Combine like terms: 13 + -4 = 9
2x = 9

Divide each side by '2'.
x = 4.5

Simplifying
x = 4.5

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