3(4r+1)=99

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Solution for 3(4r+1)=99 equation: 


Simplifying
3(4r + 1) = 99

Reorder the terms:
3(1 + 4r) = 99
(1 * 3 + 4r * 3) = 99
(3 + 12r) = 99

Solving
3 + 12r = 99

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + 12r = 99 + -3

Combine like terms: 3 + -3 = 0
0 + 12r = 99 + -3
12r = 99 + -3

Combine like terms: 99 + -3 = 96
12r = 96

Divide each side by '12'.
r = 8

Simplifying
r = 8

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