9/8r-1/8r=-1

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Solution for 9/8r-1/8r=-1 equation: 



9/8r-1/8r=-1

We move all terms to the left:

9/8r-1/8r-(-1)=0



Domain of the equation: 8r!=0

r!=0/8

r!=0

r∈R



We add all the numbers together, and all the variables

9/8r-1/8r+1=0

We multiply all the terms by the denominator


1*8r+9-1=0

We add all the numbers together, and all the variables

1*8r+8=0

Wy multiply elements

8r+8=0

We move all terms containing r to the left, all other terms to the right

8r=-8

r=-8/8

r=-1

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