what is 5 + 5

20/7*14/15 = 5*2*2/7 * 7*2/(5*3)

2*2*2/3 = 8/3

$\frac{20}{7}\times \frac{14}{15}\\ =\frac{\not{20}^4}{\not{7}^1}\times \frac{\not{14}^2}{\not{15}^3}\\ =\frac{8}{3}\\ =2\frac{2}{3}$

just as Kryn said :))

5+5=5+5