Question

(-5 1/3+3 4/5)-(-2,8-0,8)

Answer 1

= - 5 1/3 + 3 4/5 + 3,6 = - 5 1/3 + 3,8 + 3,6 = - 5 1/3 + 7,4 = - 5 1/3 + 7 2/5 =
= - 5 5/15 + 7 6/15 = 2 1/15 

Answer 2

(- 5 1/3 + 3 4/5) - (- 2,8 - 0,8) = - 5 1/3 + 3 4/5 + 2,8 + 0,8 = 2 1/15

1) 3 4/5 - 5 1/3 = (3 - 5) + (4/5 - 1/3) = - 2 + (12/15 - 5/15) = - 2 + 7/15 = - 1 8/15

2) 2,8 + 0,8 = 3,6

3) 3,6 - 1 8/15 = (3 - 1) + (6/10 - 8/15) = 2 + (18/30 - 16/30) = 2 + 2/30 = 2 1/15