-18=.66(6x-21)

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Solution for -18=.66(6x-21) equation:


Simplifying
-18 = 0.66(6x + -21)

Reorder the terms:
-18 = 0.66(-21 + 6x)
-18 = (-21 * 0.66 + 6x * 0.66)
-18 = (-13.86 + 3.96x)

Solving
-18 = -13.86 + 3.96x

Solving for variable 'x'.

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

Add '-3.96x' to each side of the equation.
-18 + -3.96x = -13.86 + 3.96x + -3.96x

Combine like terms: 3.96x + -3.96x = 0.00
-18 + -3.96x = -13.86 + 0.00
-18 + -3.96x = -13.86

Add '18' to each side of the equation.
-18 + 18 + -3.96x = -13.86 + 18

Combine like terms: -18 + 18 = 0
0 + -3.96x = -13.86 + 18
-3.96x = -13.86 + 18

Combine like terms: -13.86 + 18 = 4.14
-3.96x = 4.14

Divide each side by '-3.96'.
x = -1.045454545

Simplifying
x = -1.045454545

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