-18-6-1x=-21

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Solution for -18-6-1x=-21 equation: 


Simplifying
-18 + -6 + -1x = -21

Combine like terms: -18 + -6 = -24
-24 + -1x = -21

Solving
-24 + -1x = -21

Solving for variable 'x'.

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

Add '24' to each side of the equation.
-24 + 24 + -1x = -21 + 24

Combine like terms: -24 + 24 = 0
0 + -1x = -21 + 24
-1x = -21 + 24

Combine like terms: -21 + 24 = 3
-1x = 3

Divide each side by '-1'.
x = -3

Simplifying
x = -3

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