It doesn't matter, both of them are the same.
1/5 = 20/100, or 20%.
6x + 3y =21
6x + 3y - 21 = 0
3 (2x + y - 7) = 0
if you need to simplify it, ^ that would be my answer :)
It would be 6/7 if im not mistaken.
Interior angles of any polygon with n sides always add up to 180(n-2) degrees.
<span>If a polygon is a regular polygon with n sides, and each interior angle is 179 degrees, then its interior angles will add up to 179 n. </span>
<span>In both cases, you must get the same result for what the interior angles add up to. So: </span>
<span>179n = 180(n-2). Multiply out the 180 </span>
<span>179n = 180n - 360, and subtract 180n from both sides to get </span>
<span>-n = -360, so therefore n = 360 and it would have 360 sides.</span>