Question

PLS! AJUTOR:
1. Scrieți rezultatul sub forma de fracție ireductibilă:
14/15 : 3/10 =
16/35 : 8/25 =
7/12 : 14/3 =
45/76 : 30/19 =
2. Introduceți întregii in fractie, apoi efectuați împărțirile:
a) 4 1/6 : 5/4 =
b) 8/9 : 5 1/3 =
c) 2 1/6 : 4 1/3 =
d) 5 1/7 : 3 3/14 =

Answer 1

1. 14/15 : 3/10= 14/5 : 1/10= 140/15=28/3
16/35 : 8/25= 16/35 * 25/8= 2/35 * 25/1= 50/35= 10/7
7/12 : 14/3= 7/12 * 3/14= 1/4 * 1/2= 1/8
45/76 : 30/19= 45/76 * 19/30= 45/4 * 1/30= 45/120= 9/24= 3/8

2. a) 4 1/6= 4*6+1/6=25/6
25/6 : 5/4= 25/6 * 4/5= 5/6 * 4/1= 20/6= 10/3

b) 5 1/3= 3*5+1/3= 16/3
8/9 : 16/3= 8/9 * 3/16= 1/3 * 1/2= 1/6

c) 2 1/6= 6*2+1/6= 13/6
    4 1/3= 3*4+1/3= 13/3
13/6 : 13/3= 13/6 * 3/13= 1/2 * 1/1= 1/2

d) 5 1/7= 7*5+1/7= 36/7
    3 3/14= 14*3+3/14= 56/14
36/7 : 56/14= 36/7 * 14/56= 36/1 * 2/56= 72/56= 9/7