5r-7+7r=5

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Solution for 5r-7+7r=5 equation: 


Simplifying
5r + -7 + 7r = 5

Reorder the terms:
-7 + 5r + 7r = 5

Combine like terms: 5r + 7r = 12r
-7 + 12r = 5

Solving
-7 + 12r = 5

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + 12r = 5 + 7

Combine like terms: -7 + 7 = 0
0 + 12r = 5 + 7
12r = 5 + 7

Combine like terms: 5 + 7 = 12
12r = 12

Divide each side by '12'.
r = 1

Simplifying
r = 1

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