(4-1)/(r-7)=2

Solution for (4-1)/(r-7)=2 equation:

(4-1)/(r-7)=2

We move all terms to the left:

(4-1)/(r-7)-(2)=0


Domain of the equation: (r-7)!=0

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

r!=7

r∈R


We add all the numbers together, and all the variables

3/(r-7)-2=0

We multiply all the terms by the denominator


-2*(r-7)+3=0

We multiply parentheses

-2r+14+3=0

We add all the numbers together, and all the variables

-2r+17=0

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

-2r=-17

r=-17/-2

r=8+1/2