-6x-5(3-3x)=6(x-5)-21

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Solution for -6x-5(3-3x)=6(x-5)-21 equation:


Simplifying
-6x + -5(3 + -3x) = 6(x + -5) + -21
-6x + (3 * -5 + -3x * -5) = 6(x + -5) + -21
-6x + (-15 + 15x) = 6(x + -5) + -21

Reorder the terms:
-15 + -6x + 15x = 6(x + -5) + -21

Combine like terms: -6x + 15x = 9x
-15 + 9x = 6(x + -5) + -21

Reorder the terms:
-15 + 9x = 6(-5 + x) + -21
-15 + 9x = (-5 * 6 + x * 6) + -21
-15 + 9x = (-30 + 6x) + -21

Reorder the terms:
-15 + 9x = -30 + -21 + 6x

Combine like terms: -30 + -21 = -51
-15 + 9x = -51 + 6x

Solving
-15 + 9x = -51 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-15 + 9x + -6x = -51 + 6x + -6x

Combine like terms: 9x + -6x = 3x
-15 + 3x = -51 + 6x + -6x

Combine like terms: 6x + -6x = 0
-15 + 3x = -51 + 0
-15 + 3x = -51

Add '15' to each side of the equation.
-15 + 15 + 3x = -51 + 15

Combine like terms: -15 + 15 = 0
0 + 3x = -51 + 15
3x = -51 + 15

Combine like terms: -51 + 15 = -36
3x = -36

Divide each side by '3'.
x = -12

Simplifying
x = -12

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