15-x+12-x+8=28

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Solution for 15-x+12-x+8=28 equation:


Simplifying
15 + -1x + 12 + -1x + 8 = 28

Reorder the terms:
15 + 12 + 8 + -1x + -1x = 28

Combine like terms: 15 + 12 = 27
27 + 8 + -1x + -1x = 28

Combine like terms: 27 + 8 = 35
35 + -1x + -1x = 28

Combine like terms: -1x + -1x = -2x
35 + -2x = 28

Solving
35 + -2x = 28

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + -2x = 28 + -35

Combine like terms: 35 + -35 = 0
0 + -2x = 28 + -35
-2x = 28 + -35

Combine like terms: 28 + -35 = -7
-2x = -7

Divide each side by '-2'.
x = 3.5

Simplifying
x = 3.5

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