You can
put this solution on YOUR website!a.) Remember: anything divided by zero is undefined....

can not be zero
3/x - 1/6 = 1/x multiply all the terms by

3 - x/6 = 1 multiply all the terms by

18 - x = 6
-x = -12
x = 12
b.)

can not equal positive one
13/(y - 1) - 3 = 1/(y - 1)
13 - 3(y - 1) = 1
13 - 3y + 3 = 1
-3y = -15
y = 5