8r-7r=(-1)+12

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Solution for 8r-7r=(-1)+12 equation: 


Simplifying
8r + -7r = (-1) + 12

Combine like terms: 8r + -7r = 1r
1r = (-1) + 12
1r = -1 + 12

Combine like terms: -1 + 12 = 11
1r = 11

Solving
1r = 11

Solving for variable 'r'.

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

Divide each side by '1'.
r = 11

Simplifying
r = 11

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