Question

Subtract. Simplify, if possible 6-y/y-7 minus 8y-7/7-y =

Answer 1

the solution is \[\frac{48}{y-7}+7\]

Answer 2

(1-7y)/(7-y)

Answer 3

I came up with the first answer....why is that??

Answer 4

evaluate the following \[\frac{(7-y)(6-y)-(y-7)(8y-7)}{(y-7)(7-y)}\]

Answer 5

that gives \[\frac{-(y-7)(7y-1)}{(y-7)(7-y)}\]

Answer 6

last step is to factorise & cancel y-7 from top and bottom to give
\[\frac{−(7y−1)}{−(y−7)}\]

Answer 7

And that gives 48/y-7+7 right

Answer 8

yep :D