-5(3x-21)=(x-31)-3

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Solution for -5(3x-21)=(x-31)-3 equation:


Simplifying
-5(3x + -21) = (x + -31) + -3

Reorder the terms:
-5(-21 + 3x) = (x + -31) + -3
(-21 * -5 + 3x * -5) = (x + -31) + -3
(105 + -15x) = (x + -31) + -3

Reorder the terms:
105 + -15x = (-31 + x) + -3

Remove parenthesis around (-31 + x)
105 + -15x = -31 + x + -3

Reorder the terms:
105 + -15x = -31 + -3 + x

Combine like terms: -31 + -3 = -34
105 + -15x = -34 + x

Solving
105 + -15x = -34 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
105 + -15x + -1x = -34 + x + -1x

Combine like terms: -15x + -1x = -16x
105 + -16x = -34 + x + -1x

Combine like terms: x + -1x = 0
105 + -16x = -34 + 0
105 + -16x = -34

Add '-105' to each side of the equation.
105 + -105 + -16x = -34 + -105

Combine like terms: 105 + -105 = 0
0 + -16x = -34 + -105
-16x = -34 + -105

Combine like terms: -34 + -105 = -139
-16x = -139

Divide each side by '-16'.
x = 8.6875

Simplifying
x = 8.6875

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