6x-(3x+9)=18

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Solution for 6x-(3x+9)=18 equation:


Simplifying
6x + -1(3x + 9) = 18

Reorder the terms:
6x + -1(9 + 3x) = 18
6x + (9 * -1 + 3x * -1) = 18
6x + (-9 + -3x) = 18

Reorder the terms:
-9 + 6x + -3x = 18

Combine like terms: 6x + -3x = 3x
-9 + 3x = 18

Solving
-9 + 3x = 18

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 18 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 18 + 9
3x = 18 + 9

Combine like terms: 18 + 9 = 27
3x = 27

Divide each side by '3'.
x = 9

Simplifying
x = 9

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