4r-81=225

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Solution for 4r-81=225 equation:


Simplifying
4r + -81 = 225

Reorder the terms:
-81 + 4r = 225

Solving
-81 + 4r = 225

Solving for variable 'r'.

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

Add '81' to each side of the equation.
-81 + 81 + 4r = 225 + 81

Combine like terms: -81 + 81 = 0
0 + 4r = 225 + 81
4r = 225 + 81

Combine like terms: 225 + 81 = 306
4r = 306

Divide each side by '4'.
r = 76.5

Simplifying
r = 76.5

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