Question

Rezolva in Q₊ urmatoarele ecuatii:
a) 2/3·x=4/15
b) x : 6/7=14/9
c) 24/25:x =3,6
Va rog ajutati-ma!!!

Answer 1

a. 2x/3=4/15
10x/15=4/15   /*15
10x=4
x=4/10
x=2/5

b. x : 6/7=14/9
x*7/6=14/9
7x/6=14/9
21x/18=28/18..../*18
21x=28
x=28/21
x=4/3

c. 24/25:x =3,6
24/25*1/x =36/10
24/25x=36/10
25x=24*10/36 dupa simplificari
25x=20/3
x=20/3*25 simplificam
x=4/15