x-3+x+12=28

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Solution for x-3+x+12=28 equation:


Simplifying
x + -3 + x + 12 = 28

Reorder the terms:
-3 + 12 + x + x = 28

Combine like terms: -3 + 12 = 9
9 + x + x = 28

Combine like terms: x + x = 2x
9 + 2x = 28

Solving
9 + 2x = 28

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 2x = 28 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 28 + -9
2x = 28 + -9

Combine like terms: 28 + -9 = 19
2x = 19

Divide each side by '2'.
x = 9.5

Simplifying
x = 9.5

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