Verified answer

Пошаговое объяснение:

2)

-3 7/15 + (-0,4) + (-6 1/3) =

-3 7/15 - 0,4 - 6 1/3 =

-3 7/15 - 4/10 - 6 1/3 =

-3 28/60 - 24/60 - 6 20/60 =

-3 52/60 - 6 20/60 =

-9 72/60 = -10 12/60 = -10 1/5

3)

-1,5 + (-3 4/5) + (-8 3/20) =

-1,5 - 3 4/5 - 8 3/20 =

-1 5/10 - 3 4/5 - 8 3/20 =

-1 10/20 - 3 16/20 - 8 3/20 =

-4 26/20 - 8 3/20 = -12 29/20 = -13 9/20

4)

-2 5/8 + (-9,25) + (-3/4) =

-2 5/8 - 9,25 - 3/4 =

-2 5/8 - 9 25/100 - 3/4 =

-2 5/8 - 9 1/4 - 3/4 =

-2 5/8 - 9 2/8 - 6/8 =

-11 7/8 - 6/8 = -11 13/8 = -12 5/8

Ответ:

Пошаговое объяснение:

-3 7/15 + (-0,4) + (-6 1/3) = -3 7/15 - 0,4 - 6 1/3 = -3 7/15 - 2/5 - 6 1/3 =

= -3 7/15 - 6/15 - 6 5/15 = - 3 13/15 - 6 5/15 = -9 18/15 = -10 1/5 = - 10,2

3) -1,5 + (-3 4/5) + (-8 3/20) = -1 5/10 - 3 4/5 - 8 3/20 =

= -1 1/2 - 3 4/5 - 8 3/20 = -1 10/20 - 3 16/20 - 8 3/20 = - 4 26/20 - 8 3/20 =  = - 12 29/20 = -13 9/20

4) -2 5/8 + (-9,25) + (-3/4) = -2 5/8 - 9 25/100 - 3/4 = -2 5/8 - 9 1/4 - 3/4 =

= -2 5/8 - 9 2/8 - 6/8 = - 11 7/8 - 6/8 = - 11 13/8 = -12 5/8