Question

Выполните сложение:
а)-2 57+3=
б)- 29+(-56)=
в)2 911+(- 3 722)=

Answer 1

А) -2/7
Б) -4/18-15/18=-19/18= -( 1 и 1/18)
В) 2 9/11-3 7/22=-1 7/22+18/22=-22/22+11/22=-11/22=-1/2

Answer 2

а)- 2 5/7  +  3 = - 19/7  +  3 =(-19*1  +  3 * 7)/7 = -19/7  +  21/7 =  2/7
б) -2/9+(-5/6)=- 2/9 - 5/6 =(-2 * 2-5 * 3)/18 = -4/18 -15/18 = - 19/18 = - 1 1/18
в)2 9/11+(-3 7/22)=2 9/11  -  3 7/22 = 31/11  -  73/22  =(31 * 2  -  73 * 1)/22 = 62/22  -  73/22 =  - 11/22 = - 1/2