Решите примеры!

2-15+23-11=?

-31+14+5-17=?

24.8+35.6-14.8-55.6=?

3 1/3-2 3/5+1 2/3-2 2/5-3 2/15=?

1) = 25 - 26 = ( - 1)

2) = 19 - 48 = ( - 29)

3) = 60.4 - 70.4 = ( - 10)

4)

1) 3 1/3 + 1 2/3 = 4 3/3 = 5

2) 2 3/5 + 2 2/5 = 4 5/5 = 5

3) 5 + 3 2/15 = 8 2/15

4) 5 - 8 2/15 = ( - 3 2/15) (ответ)

2-15+23-11=-1

-31+14+5-17=-29

24.8+35.6-14.8-55.6=-10

3 1/3 - 2 3/5+1 2/3 - 2 2/5 - 3 2/15 = 3 5/15 - 2 9/15+1 10/15 - 2 6/15 - 3 2/15=

= - 3 2/15