n-3r=7

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Solution for n-3r=7 equation: 


Simplifying
n + -3r = 7

Solving
n + -3r = 7

Solving for variable 'n'.

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

Add '3r' to each side of the equation.
n + -3r + 3r = 7 + 3r

Combine like terms: -3r + 3r = 0
n + 0 = 7 + 3r
n = 7 + 3r

Simplifying
n = 7 + 3r

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