x+x-3=28

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Solution for x+x-3=28 equation: 


Simplifying
x + x + -3 = 28

Reorder the terms:
-3 + x + x = 28

Combine like terms: x + x = 2x
-3 + 2x = 28

Solving
-3 + 2x = 28

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 2x = 28 + 3

Combine like terms: -3 + 3 = 0
0 + 2x = 28 + 3
2x = 28 + 3

Combine like terms: 28 + 3 = 31
2x = 31

Divide each side by '2'.
x = 15.5

Simplifying
x = 15.5

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