Question

reduza as frações ao mesmo denominador comum 7/10,4/14,5/6,2/5

Answer 1

7/10
4/14
5/6
2/5

Aqui a gente tira o MMC, assim:

10, 14, 6, 5 | 2
5, 7, 3, 5 | 3
5, 7, 1, 5 | 5
1, 7, 1, 1 | 7
1, 1, 1, 1

MMC = 2.3.5.7 = 210

7/10 = 147/210
4/14 = 60/210
5/6 = 175/210
2/5 = 84/210