-3(x+5)-6=18

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Solution for -3(x+5)-6=18 equation:


Simplifying
-3(x + 5) + -6 = 18

Reorder the terms:
-3(5 + x) + -6 = 18
(5 * -3 + x * -3) + -6 = 18
(-15 + -3x) + -6 = 18

Reorder the terms:
-15 + -6 + -3x = 18

Combine like terms: -15 + -6 = -21
-21 + -3x = 18

Solving
-21 + -3x = 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 + -3x = 18 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 18 + 21
-3x = 18 + 21

Combine like terms: 18 + 21 = 39
-3x = 39

Divide each side by '-3'.
x = -13

Simplifying
x = -13

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