9-2(3x-4)=21

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Solution for 9-2(3x-4)=21 equation:


Simplifying
9 + -2(3x + -4) = 21

Reorder the terms:
9 + -2(-4 + 3x) = 21
9 + (-4 * -2 + 3x * -2) = 21
9 + (8 + -6x) = 21

Combine like terms: 9 + 8 = 17
17 + -6x = 21

Solving
17 + -6x = 21

Solving for variable 'x'.

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

Add '-17' to each side of the equation.
17 + -17 + -6x = 21 + -17

Combine like terms: 17 + -17 = 0
0 + -6x = 21 + -17
-6x = 21 + -17

Combine like terms: 21 + -17 = 4
-6x = 4

Divide each side by '-6'.
x = -0.6666666667

Simplifying
x = -0.6666666667

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