r+8+2=7+7+2n-4

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Solution for r+8+2=7+7+2n-4 equation: 


Simplifying
r + 8 + 2 = 7 + 7 + 2n + -4

Reorder the terms:
8 + 2 + r = 7 + 7 + 2n + -4

Combine like terms: 8 + 2 = 10
10 + r = 7 + 7 + 2n + -4

Reorder the terms:
10 + r = 7 + 7 + -4 + 2n

Combine like terms: 7 + 7 = 14
10 + r = 14 + -4 + 2n

Combine like terms: 14 + -4 = 10
10 + r = 10 + 2n

Add '-10' to each side of the equation.
10 + -10 + r = 10 + -10 + 2n

Combine like terms: 10 + -10 = 0
0 + r = 10 + -10 + 2n
r = 10 + -10 + 2n

Combine like terms: 10 + -10 = 0
r = 0 + 2n
r = 2n

Solving
r = 2n

Solving for variable 'r'.

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

Simplifying
r = 2n

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