3r-20=25

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Solution for 3r-20=25 equation:


Simplifying
3r + -20 = 25

Reorder the terms:
-20 + 3r = 25

Solving
-20 + 3r = 25

Solving for variable 'r'.

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

Add '20' to each side of the equation.
-20 + 20 + 3r = 25 + 20

Combine like terms: -20 + 20 = 0
0 + 3r = 25 + 20
3r = 25 + 20

Combine like terms: 25 + 20 = 45
3r = 45

Divide each side by '3'.
r = 15

Simplifying
r = 15

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