3x+12=10.5

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Solution for 3x+12=10.5 equation: 


Simplifying
3x + 12 = 10.5

Reorder the terms:
12 + 3x = 10.5

Solving
12 + 3x = 10.5

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 3x = 10.5 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 10.5 + -12
3x = 10.5 + -12

Combine like terms: 10.5 + -12 = -1.5
3x = -1.5

Divide each side by '3'.
x = -0.5

Simplifying
x = -0.5

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