6(x+21)-15=3x+18

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Solution for 6(x+21)-15=3x+18 equation:


Simplifying
6(x + 21) + -15 = 3x + 18

Reorder the terms:
6(21 + x) + -15 = 3x + 18
(21 * 6 + x * 6) + -15 = 3x + 18
(126 + 6x) + -15 = 3x + 18

Reorder the terms:
126 + -15 + 6x = 3x + 18

Combine like terms: 126 + -15 = 111
111 + 6x = 3x + 18

Reorder the terms:
111 + 6x = 18 + 3x

Solving
111 + 6x = 18 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
111 + 6x + -3x = 18 + 3x + -3x

Combine like terms: 6x + -3x = 3x
111 + 3x = 18 + 3x + -3x

Combine like terms: 3x + -3x = 0
111 + 3x = 18 + 0
111 + 3x = 18

Add '-111' to each side of the equation.
111 + -111 + 3x = 18 + -111

Combine like terms: 111 + -111 = 0
0 + 3x = 18 + -111
3x = 18 + -111

Combine like terms: 18 + -111 = -93
3x = -93

Divide each side by '3'.
x = -31

Simplifying
x = -31

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