3x+78=123

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Solution for 3x+78=123 equation: 


Simplifying
3x + 78 = 123

Reorder the terms:
78 + 3x = 123

Solving
78 + 3x = 123

Solving for variable 'x'.

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

Add '-78' to each side of the equation.
78 + -78 + 3x = 123 + -78

Combine like terms: 78 + -78 = 0
0 + 3x = 123 + -78
3x = 123 + -78

Combine like terms: 123 + -78 = 45
3x = 45

Divide each side by '3'.
x = 15

Simplifying
x = 15

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