21=9-6(6x-8)

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Solution for 21=9-6(6x-8) equation:


Simplifying
21 = 9 + -6(6x + -8)

Reorder the terms:
21 = 9 + -6(-8 + 6x)
21 = 9 + (-8 * -6 + 6x * -6)
21 = 9 + (48 + -36x)

Combine like terms: 9 + 48 = 57
21 = 57 + -36x

Solving
21 = 57 + -36x

Solving for variable 'x'.

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

Add '36x' to each side of the equation.
21 + 36x = 57 + -36x + 36x

Combine like terms: -36x + 36x = 0
21 + 36x = 57 + 0
21 + 36x = 57

Add '-21' to each side of the equation.
21 + -21 + 36x = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 36x = 57 + -21
36x = 57 + -21

Combine like terms: 57 + -21 = 36
36x = 36

Divide each side by '36'.
x = 1

Simplifying
x = 1

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