x+(5x+21)+18=0

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Solution for x+(5x+21)+18=0 equation:


Simplifying
x + (5x + 21) + 18 = 0

Reorder the terms:
x + (21 + 5x) + 18 = 0

Remove parenthesis around (21 + 5x)
x + 21 + 5x + 18 = 0

Reorder the terms:
21 + 18 + x + 5x = 0

Combine like terms: 21 + 18 = 39
39 + x + 5x = 0

Combine like terms: x + 5x = 6x
39 + 6x = 0

Solving
39 + 6x = 0

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 6x = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 6x = 0 + -39
6x = 0 + -39

Combine like terms: 0 + -39 = -39
6x = -39

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

Simplifying
x = -6.5

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