3(7r-7)=36+7n

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Solution for 3(7r-7)=36+7n equation: 


Simplifying
3(7r + -7) = 36 + 7n

Reorder the terms:
3(-7 + 7r) = 36 + 7n
(-7 * 3 + 7r * 3) = 36 + 7n
(-21 + 21r) = 36 + 7n

Solving
-21 + 21r = 36 + 7n

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 21r = 36 + 21 + 7n

Combine like terms: -21 + 21 = 0
0 + 21r = 36 + 21 + 7n
21r = 36 + 21 + 7n

Combine like terms: 36 + 21 = 57
21r = 57 + 7n

Divide each side by '21'.
r = 2.714285714 + 0.3333333333n

Simplifying
r = 2.714285714 + 0.3333333333n

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