Question

Допоможіть будь ласка

Answer 1

Ответ:

Пошаговое объяснение:

1)  -3 5/6+(-4 3/5) = -(3 5/6+4 3/5) => НОК(6;5)=30 => -(3 25/30+4 18/30) =

=-7 43/30 = -8 13/30;

2)  5 2/9+(-2 3/4) = 5 2/9 - 2 3/4 => НОК(9;4) = 36 => 5 8/36 - 2 27/36 =

= (5-2)  (8-27)/36 = 2 (36+8-27)/36 = 2 17/36;

3) - 5 3/8 + 4 9/10 = -(5 3/8 - 4 9/10) =>НОК(8;10)=40=> -(5 15/40-4 36/40)=

= -1 (15-36)/40 = -(40+15-36)/40 = - 19/40;

4)  2 5/8+(-1 5/12) = 2 5/8 - 1 5/12 => НОК(8;12)=24=> 2 15/24 - 1 10/24 =

= 1 (15-10)/24 = 1 5/24;

5)  2 5/6 +(-3 2/3) = 2 5/6 - 3 2/3 => НОК(6;3)=6 =>2 5/6 - 3 4/6 =

= -(3 4/6 - 2 5/6) = -1 (4-5)/6  = -(6+4-5)/6 = -5/6;

6)   -7/8 +1 3/7 = 1 3/7 - 7/8 => НОК(7;8)=> 56=> 1 24/56 - 49/56 =

= (56+24-49)/56  = 31/56.

(Проверку см. на скриншоте)