Question

me pueden ayudar a sumar y a restar 4/12+8/5 = 2/3+5/2=
6/4+3/7= 9/5+7/5= 14/15+1/6=
2/3-5/14= 7/12-1/20= 5/7+3/11= 7/10-9/6= 4/5-7/15= 9/10-1/9= 9/19-3/19= ​

Answer 1

Respuesta:

4/12+8/5 =20/60 + 96/60 = 116/60

2/3+5/2= = 4/6 + 15/6 = 19/6

6/4+3/7 = 42/28 + 12/28 = 54/28

9/5+7/5 = 16/5

14/15+1/6 = 28/30 + 5/30 = 33/30

2/3-5/14 = 28/42 - 15/42 = 13/42

7/12-1/20 = 35/60 - 3/60 = 32/60

5/7+3/11 = 55/77 + 21/77 = 76/77

7/10-9/6 = 21/30 - 45/30 = -24/30

4/5-7/15 = 12/15 - 7/15 = 5/15

9/10-1/9 = 81/90 - 10/90 = 71/90

9/19-3/19 = 6/19