9(r+1)=99

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Solution for 9(r+1)=99 equation: 


Simplifying
9(r + 1) = 99

Reorder the terms:
9(1 + r) = 99
(1 * 9 + r * 9) = 99
(9 + 9r) = 99

Solving
9 + 9r = 99

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 + 9r = 99 + -9

Combine like terms: 9 + -9 = 0
0 + 9r = 99 + -9
9r = 99 + -9

Combine like terms: 99 + -9 = 90
9r = 90

Divide each side by '9'.
r = 10

Simplifying
r = 10

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