21-5x=5-9r

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


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

Solving
21 + -5x = 5 + -9r

Solving for variable 'x'.

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

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

Combine like terms: 21 + -21 = 0
0 + -5x = 5 + -21 + -9r
-5x = 5 + -21 + -9r

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

Divide each side by '-5'.
x = 3.2 + 1.8r

Simplifying
x = 3.2 + 1.8r

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