12+15-x=19

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Solution for 12+15-x=19 equation:


Simplifying
12 + 15 + -1x = 19

Combine like terms: 12 + 15 = 27
27 + -1x = 19

Solving
27 + -1x = 19

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -1x = 19 + -27

Combine like terms: 27 + -27 = 0
0 + -1x = 19 + -27
-1x = 19 + -27

Combine like terms: 19 + -27 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8

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