3x+1+7=12

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Solution for 3x+1+7=12 equation: 


Simplifying
3x + 1 + 7 = 12

Reorder the terms:
1 + 7 + 3x = 12

Combine like terms: 1 + 7 = 8
8 + 3x = 12

Solving
8 + 3x = 12

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 3x = 12 + -8

Combine like terms: 8 + -8 = 0
0 + 3x = 12 + -8
3x = 12 + -8

Combine like terms: 12 + -8 = 4
3x = 4

Divide each side by '3'.
x = 1.333333333

Simplifying
x = 1.333333333

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