8-3x+13=12

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Solution for 8-3x+13=12 equation: 


Simplifying
8 + -3x + 13 = 12

Reorder the terms:
8 + 13 + -3x = 12

Combine like terms: 8 + 13 = 21
21 + -3x = 12

Solving
21 + -3x = 12

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + -3x = 12 + -21

Combine like terms: 21 + -21 = 0
0 + -3x = 12 + -21
-3x = 12 + -21

Combine like terms: 12 + -21 = -9
-3x = -9

Divide each side by '-3'.
x = 3

Simplifying
x = 3

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