1-5r-7r=1

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Solution for 1-5r-7r=1 equation: 


Simplifying
1 + -5r + -7r = 1

Combine like terms: -5r + -7r = -12r
1 + -12r = 1

Add '-1' to each side of the equation.
1 + -1 + -12r = 1 + -1

Combine like terms: 1 + -1 = 0
0 + -12r = 1 + -1
-12r = 1 + -1

Combine like terms: 1 + -1 = 0
-12r = 0

Solving
-12r = 0

Solving for variable 'r'.

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

Divide each side by '-12'.
r = 0

Simplifying
r = 0

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