Question

2 и 4 пешите пжжпжпжпжпж​

Answer 1

Ответ:

Пошаговое объяснение:

2)

-3. 7/15 + (-4/10) + (-6. 1/3) =

-3. 14/30 + (-12/30) + (-6. 10/30) =

-3. 14/30 - 12/30 - 6. 10/30 =

-9. 36/30 = -10. 6/30 =

-10. 1/5

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. 13/8 = -12. 5/8

Answer 2

1) - 6 2/3 - 8,75 = - 20/3 - 8 3/4 = - 20/3 - 35/4 = - (80/12 + 105/12) = - 185/12 = - 15 5/12

2) - 3 7/15 + 0,4 - 6 1/3 = - 3 7/15 + 2/5 - 6 1/3 = - 52/15 + 2/5 - 19/3 = - 52/15 + 6/15 - 95/15 = - 1/15 * ( 52 - 6 + 95) = - 1/15 * 151 = - 151/15 = - 10 1/15

3)-1,5 - 3 4/5 - 8 3/20 = - 1 1/2 - 3 4/5 - 8 3/20 = - 3/2 - 19/5 - 163/20 = - 30/20 - 76/20 - 163/20 = - 1/20 * (30 + 76 + 163) = - 1/20 * 269 = - 269/20 = -13 9/20

4) - 2 5/8 - 9,25 - 3/4 = - 2,625 - 9,25 - 0,75 = - (2,625 + 9,25 + 0,75) = - 12,625 = 12 5/8