4r-9=27

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Solution for 4r-9=27 equation: 


Simplifying
4r + -9 = 27

Reorder the terms:
-9 + 4r = 27

Solving
-9 + 4r = 27

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + 4r = 27 + 9

Combine like terms: -9 + 9 = 0
0 + 4r = 27 + 9
4r = 27 + 9

Combine like terms: 27 + 9 = 36
4r = 36

Divide each side by '4'.
r = 9

Simplifying
r = 9

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