21r+21=25

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Solution for 21r+21=25 equation: 


Simplifying
21r + 21 = 25

Reorder the terms:
21 + 21r = 25

Solving
21 + 21r = 25

Solving for variable 'r'.

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

Add '-21' to each side of the equation.
21 + -21 + 21r = 25 + -21

Combine like terms: 21 + -21 = 0
0 + 21r = 25 + -21
21r = 25 + -21

Combine like terms: 25 + -21 = 4
21r = 4

Divide each side by '21'.
r = 0.1904761905

Simplifying
r = 0.1904761905

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