Question

Resuelve las operaciones

1/3+4/7=
9/10+3/4=
3/7+1/2=
5/13+4/5=
2/3+5/6=
7/5+8/15=
5/6+4/5=
9/11+1/3=
5/8+2/12=
3/4+7/15=
6/14+2/12=
6/18+6/12=

ayuda plis es para mañana‍​

Answer 1

Respuesta:

1/3+4/7 = 19/21

1/3+4/7 ; 1/3 = 7/21

= 7/21+4/7 ; 4/7 = 12/21

= 7/21+12/21

= (7+12)/21

= 19/21

9/10+3/4 = 33/20

9/10+3/4 ; 9/10 = 36/10

= 36/40+3/4 ; 3/4 = 30/40

= 36/40+30/40

= (36+30)/40

= 66/40

= (66÷2)/(40÷2)

= 33/20

3/7+1/2 = 13/14

3/7+1/2 ; 3/7 = 6/14

= 6/14+1/2 ; 1/2 = 7/14

= 6/14+7/14

= (6+7)/14

= 13/14

5/13+4/5 = 77/65

5/13+4/5 ; 5/13 = 25/65

= 25/65+4/5 ; 4/5 = 52/65

= 25/65+52/65

= (25+52)/65

= 77/65

2/3+5/6 = 3/2

2/3+5/6 ; 2/3 = 4/6

= 4/6+5/6

= (4+5)/6

= 9/6

= (9÷3)/(6÷3)

= 3/2

9/11+1/3 = 38/33

9/11+1/3 ; 9/11 = 27/33

= 27/33+1/3 ; 1/3 = 11/33

= 27/33+11/33

= (27+11)/33.

= 38/33

5/8+2/12 = 19/24

5/8+2/12 ; 5/8 = 15/24

= 15/24+2/12 ; 2/12 = 4/24

= 15/24+4/24

= (15+4)/24

= 19/24

3/4+7/15 = 73/60

3/4+7/15 ; 3/4 = 45/60

= 45/60+7/15 ; 7/15 = 28/60

= 45/60+28/60

= (45+28)/60

= 73/60

6/14+2/12 = 25/42

6/14+2/12 ; 6/14 = 36/84

= 36/84+2/12 ; 2/12 = 14/84

= 36/84+14/84

= (36+14)/84

= 50/84

= (50÷2)/(84÷2)

= 25/42

6/18+6/12 = 5/6

6/18+6/12 ; 6/18 = 12/36

= 12/36+6/12 ; 6/12 = 18/36

= 12/36+18/36

= (12+18)/36

= 30/36

= (30÷6)/(36÷6)

= 5/6