№2А - 4) 72 6/11Б - 3) -72 6/11В - 1) 95 5/11
№34 1/3 x 5 + 2,4:(-0,1) - 11/15 : 1 2/5= 13 1/3 x 5 + 24 + (-3/1 x 5)= 66 + 24 - 15= 75 - 15= 60
№4-4 4/9 : x = 2 2/3 : (-1 1/2)-4 4/9 : x = 8/3 : (-3/2)-4 4/9 : x = -8/3 * -2/3-4 4/9 : x = 16/9x = -4
№57 2/11 + 1 3/22= 79/11 + 25/22= (79*2 + 25)/22= (158 + 25)/22= 183/22= 8 7/22
Ответ: 1) 8 7/22
№2
А - 4) 72 6/11
Б - 3) -72 6/11
В - 1) 95 5/11
№3
4 1/3 x 5 + 2,4:(-0,1) - 11/15 : 1 2/5
= 13 1/3 x 5 + 24 + (-3/1 x 5)
= 66 + 24 - 15
= 75 - 15
= 60
№4
-4 4/9 : x = 2 2/3 : (-1 1/2)
-4 4/9 : x = 8/3 : (-3/2)
-4 4/9 : x = -8/3 * -2/3
-4 4/9 : x = 16/9
x = -4
№5
7 2/11 + 1 3/22
= 79/11 + 25/22
= (79*2 + 25)/22
= (158 + 25)/22
= 183/22
= 8 7/22
Ответ: 1) 8 7/22