Question

Me ajudem a resolver
1/4 + 2/9+ 3/7

5/3+2/9 - 4/5

Answer 1

Aqui deu esse resultado ‍♀️ 1,9896824

Answer 2

Bora lá

1      2      3     21+(28*2)+(36*3)    21+56+108       185
--- + --- + --- = -----------------------  = ---------------- = -------
4      9      7                  252                    252             252

MMC
4,9,7 | 2
2,9,7 | 2
1,9,7 | 3
1,3,7 | 3
1,1,7 | 7
1,1,1

2.2.3.3.7 = 84


5       2    4      (15*5)+(5*2)-(9*4)     75+10-36     49      
--- + --- - ---- = ------------------------ = -------------- = -----
3       9     5                   45                    45             45

MMC
3,9,5 | 3
1,3,5 | 3
1,1,5 | 5
1,1,1

3.3.5 = 45