12+4x=42

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Solution for 12+4x=42 equation: 


Simplifying
12 + 4x = 42

Solving
12 + 4x = 42

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 + 4x = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 4x = 42 + -12
4x = 42 + -12

Combine like terms: 42 + -12 = 30
4x = 30

Divide each side by '4'.
x = 7.5

Simplifying
x = 7.5

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