Verified answer

Step-by-step explanation:

2 (3/5) + 1 (2/5) - 4/15

= 6/5 + 2/5 - 4/15

= (6+2)/5 - 4/15

= 8/5 - 4/15

Denominators are 5 and 15

L.C.M of 5 and 15 is : 15

= (8×3) / (5×3) - 4/15

= 24 / 15 - 14 / 15

= (24 - 14) /15

= 10/15

= 2 / 3

= 0.6666667

= 0.7