21-5x=9x+4

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


Simplifying
21 + -5x = 9x + 4

Reorder the terms:
21 + -5x = 4 + 9x

Solving
21 + -5x = 4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
21 + -5x + -9x = 4 + 9x + -9x

Combine like terms: -5x + -9x = -14x
21 + -14x = 4 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + -14x = 4 + 0
21 + -14x = 4

Add '-21' to each side of the equation.
21 + -21 + -14x = 4 + -21

Combine like terms: 21 + -21 = 0
0 + -14x = 4 + -21
-14x = 4 + -21

Combine like terms: 4 + -21 = -17
-14x = -17

Divide each side by '-14'.
x = 1.214285714

Simplifying
x = 1.214285714

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