You can put this solution on YOUR website!
This says 2 things:
(1)
and
(2)
Subtract from both sides of (1)
(1)
(1)
Divide both sides by and reverse < sign
(1)
or,
(1)
Now subtract from both sides of (2)
Divide both sides by and reverse sign
Or, what is the same thing:
Putting (1) and (2) together: answer