21+6x=-18

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Solution for 21+6x=-18 equation: 


Simplifying
21 + 6x = -18

Solving
21 + 6x = -18

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 6x = -18 + -21

Combine like terms: 21 + -21 = 0
0 + 6x = -18 + -21
6x = -18 + -21

Combine like terms: -18 + -21 = -39
6x = -39

Divide each side by '6'.
x = -6.5

Simplifying
x = -6.5

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