Question

me ajudem nessa questao 4/5+1/2+5/8. a 21/40 b 33/40 c 55/40 d 77/40 ????

Answer 1

4/5 + 1/2 + 5/8

mmc
5, 2, 8 |_2_
5, 1, 4 |_2_
5, 1, 2 |_2_
5, 1, 1 |_5_
1, 1, 1 | 2 × 2 × 2 × 5 = 40

32/40 + 20/40 + 25/40 = 77/40