<span> b = -9 that is the answer that i came up with i passed algebra with a A+ so that should be it.</span>
To do this, change into common denominators. The common denominator is 21 so change the problem from 1/3 + 1/7 to 7/21 + 3/21. This gives you 10/21. It is already in simplest form.
Answer:
point b is at 5,-3
you have to go 5 past and .5 up