5x-21=-4x

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


Simplifying
5x + -21 = -4x

Reorder the terms:
-21 + 5x = -4x

Solving
-21 + 5x = -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-21 + 5x + 4x = -4x + 4x

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

Combine like terms: -4x + 4x = 0
-21 + 9x = 0

Add '21' to each side of the equation.
-21 + 21 + 9x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 9x = 0 + 21
9x = 0 + 21

Combine like terms: 0 + 21 = 21
9x = 21

Divide each side by '9'.
x = 2.333333333

Simplifying
x = 2.333333333

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