4 2/3-2,8:(0,6+1/15)

Question

4 2/3-2,8:(0,6+1/15)

Answer 1

4 2/3 - 2,8 : (0,6 + 1/15) = 7/15
1) 0,6 + 1/15 = 6/10 + 1/15 = 18/30 + 2/30 = 20/30 = 2/3
2) 2,8 : 2/3 = 28/10 : 2/3 = 28/10 * 3/2 = 14/10 * 3/1 = 42/10 = 21/5 = 4 1/5
3) 4 2/3 - 4 1/5 = 4 10/15 - 4 3/15 = 7/15