42+3x=27

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Solution for 42+3x=27 equation: 


Simplifying
42 + 3x = 27

Solving
42 + 3x = 27

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + 3x = 27 + -42

Combine like terms: 42 + -42 = 0
0 + 3x = 27 + -42
3x = 27 + -42

Combine like terms: 27 + -42 = -15
3x = -15

Divide each side by '3'.
x = -5

Simplifying
x = -5

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