3(2x-6)-(2x+1)=9

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Solution for 3(2x-6)-(2x+1)=9 equation:


Simplifying
3(2x + -6) + -1(2x + 1) = 9

Reorder the terms:
3(-6 + 2x) + -1(2x + 1) = 9
(-6 * 3 + 2x * 3) + -1(2x + 1) = 9
(-18 + 6x) + -1(2x + 1) = 9

Reorder the terms:
-18 + 6x + -1(1 + 2x) = 9
-18 + 6x + (1 * -1 + 2x * -1) = 9
-18 + 6x + (-1 + -2x) = 9

Reorder the terms:
-18 + -1 + 6x + -2x = 9

Combine like terms: -18 + -1 = -19
-19 + 6x + -2x = 9

Combine like terms: 6x + -2x = 4x
-19 + 4x = 9

Solving
-19 + 4x = 9

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + 4x = 9 + 19

Combine like terms: -19 + 19 = 0
0 + 4x = 9 + 19
4x = 9 + 19

Combine like terms: 9 + 19 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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