4r-5=31

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Solution for 4r-5=31 equation: 


Simplifying
4r + -5 = 31

Reorder the terms:
-5 + 4r = 31

Solving
-5 + 4r = 31

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + 4r = 31 + 5

Combine like terms: -5 + 5 = 0
0 + 4r = 31 + 5
4r = 31 + 5

Combine like terms: 31 + 5 = 36
4r = 36

Divide each side by '4'.
r = 9

Simplifying
r = 9

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