Найдите решение выражения СРОЧНО а) (1 1/5-1 2/3) :2/3 b)1 2/7 -2 1/2) : 1 3/7 c)(1...

Question

Найдите решение выражения
СРОЧНО
а) (1 1/5-1 2/3) :2/3
b)1 2/7 -2 1/2) : 1 3/7
c)(1 1/3-1 4/5): 1 2/3=
d) (1 3/4 - 4 2/3) : 3 1/2
e) (2 1/5-3 2/3):11/13

Answer 1

А) (1 1/5-1 2/3) :2/3 =(6/5-5/3)*3/2=(18/15-25/15)*3/2=-7/15*3/2=-7/10 или -0,7;//// b)(1 2/7 -2 1/2) : 1 3/7 =(9/7-5/2)*7/10=(18/14-35/14)*7/10=-17/14*7/10=-17/20; //// c)(1 1/3-1 4/5): 1 2/3= (4/3-9/5)*3/5=(20/15-27/15)*3/5=-7/15*3/5=-7/25; /// d) (1 3/4 - 4 2/3) : 3 1/2 =(7/4-14/3)*2/7= (21/12-56/12)*2/7=-35/12*2/7=-5/6; /// e) (2 1/5-3 2/3):11/13 =(11/5-11/3)*13/11= (33/15-55/15)*13/11=-22/15*13/11=-26/15=-1 11/15

Answer 2

(1 1/5 - 1 2/3) / 2/3=(6/5-5/3) / 2/3=(18-25) / 15 :2/3=-7/15 : 2/3=-7/15*3/2= -7/10
(1 2/7 - 2 1/2) / 1 3/7= (9/7-5/2) / 10/7=(18-35)/14 : 10/7 = -17/14 : 10/7= 
= -17/14 * 7*10= -17/20
(1 1/3 - 1 4/5) / 1 2/3= (4/3-9/5) / 5/3=(20-27)/15 : 5/3=  -7/15*3/5= -7/25
(1 3/4 - 4 2/3) / 3 1/2 = (7/4-14/3) / 7/2=(21-56)/12 : 7/2=-35/12 : 7/2 = -35/12 * 2/7 = -5/6
(2 1/5 - 3 2/3)/11/13= (11/5 - 11/3) / 11/13 = (33-55) /15 : 11/13 = -22/15 : 11/13 = 
= -22/15 * 13/11=  -26/15= -1  11/15