Question

Va rooooog repedeeeeee ​

Answer 1

Răspuns:

15=3•5

18=2•3^2

cmmmc = 2•3^2 • 5=90

[(6-5)/90 • 45 + 1/60 • 60/(5-4)] • 2/3 =

(1/2 + 1) • 2/3 =

3/2 • 2/3 =

1

Answer 2

1/15 - 1/18 = 6/90 - 5/90 = 1/90;
1/90 : 1/45 = 1/90 x 45/1 = 1/2;

1/12 - 1/15 = 5/60 - 4/60 = 1/60;
1/60 : 1/60 = 1/60 x 60/1 = 1

(1/2 + 1 ) : 3/2 = 3/2 : 3/2 = 1

Rezultatul este 1.Nu stiu daca este totul bine:(