5-21=5x-9-4x

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Solution for 5-21=5x-9-4x equation:


Simplifying
5 + -21 = 5x + -9 + -4x

Combine like terms: 5 + -21 = -16
-16 = 5x + -9 + -4x

Reorder the terms:
-16 = -9 + 5x + -4x

Combine like terms: 5x + -4x = 1x
-16 = -9 + 1x

Solving
-16 = -9 + 1x

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.
-16 + -1x = -9 + 1x + -1x

Combine like terms: 1x + -1x = 0
-16 + -1x = -9 + 0
-16 + -1x = -9

Add '16' to each side of the equation.
-16 + 16 + -1x = -9 + 16

Combine like terms: -16 + 16 = 0
0 + -1x = -9 + 16
-1x = -9 + 16

Combine like terms: -9 + 16 = 7
-1x = 7

Divide each side by '-1'.
x = -7

Simplifying
x = -7

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