(1/2-2/5)*62/3=

(1/2-2/5)*62/3= (5/10-4/10)*62/3=1/10 * 62/3=62/30=2 i 2/30=2 i 1/15

(1/2-2/5)*62/3=(5/10-4/10)*62/3=1/10 * 62/3=62/30=2 2/30