Answer: -3060
68
-45
--------
340
272x <-- the x is in place of a zero
--------
3060
times the negative: -3060
Multiple 5x70 to get 350. Which makes the equation 350=5x and then you have to divide both sides by 5 to get x by itself. so 5x/5 and 350/5 makes x=70
Hey! There are 7 sides and 7 vertices on a Heptagon. Hope this helps!