3x+9=-42

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Solution for 3x+9=-42 equation: 


Simplifying
3x + 9 = -42

Reorder the terms:
9 + 3x = -42

Solving
9 + 3x = -42

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 3x = -42 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = -42 + -9
3x = -42 + -9

Combine like terms: -42 + -9 = -51
3x = -51

Divide each side by '3'.
x = -17

Simplifying
x = -17

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