5x+2r=21

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Solution for 5x+2r=21 equation: 


Simplifying
5x + 2r = 21

Reorder the terms:
2r + 5x = 21

Solving
2r + 5x = 21

Solving for variable 'r'.

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

Add '-5x' to each side of the equation.
2r + 5x + -5x = 21 + -5x

Combine like terms: 5x + -5x = 0
2r + 0 = 21 + -5x
2r = 21 + -5x

Divide each side by '2'.
r = 10.5 + -2.5x

Simplifying
r = 10.5 + -2.5x

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