8-9x-3=-64+7x-21

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Solution for 8-9x-3=-64+7x-21 equation:


Simplifying
8 + -9x + -3 = -64 + 7x + -21

Reorder the terms:
8 + -3 + -9x = -64 + 7x + -21

Combine like terms: 8 + -3 = 5
5 + -9x = -64 + 7x + -21

Reorder the terms:
5 + -9x = -64 + -21 + 7x

Combine like terms: -64 + -21 = -85
5 + -9x = -85 + 7x

Solving
5 + -9x = -85 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
5 + -9x + -7x = -85 + 7x + -7x

Combine like terms: -9x + -7x = -16x
5 + -16x = -85 + 7x + -7x

Combine like terms: 7x + -7x = 0
5 + -16x = -85 + 0
5 + -16x = -85

Add '-5' to each side of the equation.
5 + -5 + -16x = -85 + -5

Combine like terms: 5 + -5 = 0
0 + -16x = -85 + -5
-16x = -85 + -5

Combine like terms: -85 + -5 = -90
-16x = -90

Divide each side by '-16'.
x = 5.625

Simplifying
x = 5.625

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