5x-2(x+9)=18

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Solution for 5x-2(x+9)=18 equation:


Simplifying
5x + -2(x + 9) = 18

Reorder the terms:
5x + -2(9 + x) = 18
5x + (9 * -2 + x * -2) = 18
5x + (-18 + -2x) = 18

Reorder the terms:
-18 + 5x + -2x = 18

Combine like terms: 5x + -2x = 3x
-18 + 3x = 18

Solving
-18 + 3x = 18

Solving for variable 'x'.

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

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

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

Combine like terms: 18 + 18 = 36
3x = 36

Divide each side by '3'.
x = 12

Simplifying
x = 12

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