28+x=13

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Solution for 28+x=13 equation: 


Simplifying
28 + x = 13

Solving
28 + x = 13

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + x = 13 + -28

Combine like terms: 28 + -28 = 0
0 + x = 13 + -28
x = 13 + -28

Combine like terms: 13 + -28 = -15
x = -15

Simplifying
x = -15

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