Question

ADUCETI LA ACELASI NUMITOR COMUN FRACTIILE: 5 SUPRA 6, 3 SUPRA 15,7 SUPRA 70

Answer 1

5/6 ; 3/15; 7/70
Descompunem numitorii in factori primi:
6 = 2 x 3
15 = 3 x 5
70 = 2 x 5 x 7
Cmmmc = 2 x 3 x 5 x 7 = 210
Amplificam prima fractie cu 210 : 6 = 35
Amplificam a doua fractie cu 210 : 15 = 14
Amplificam a treia fractie cu 210 : 70 = 3
5/6 = 175/210
3/15 = 42/210
7/70 = 21/210