Question

es para las 8 ayudaaaaa
doy coronita. ​

Answer 1

Respuesta:

a ) 5 / 12

b ) 6 / 7

c ) 7 / 8

d ) 13 / 20

e ) 29 / 30

f ) 11 / 14

g ) 13 / 20

h ) 11 / 10

i ) 109 / 70

j ) 23 / 4

Explicación paso a paso:

a )

1 / 6 + 3 / 12

= 2 / 12 + 3 / 1

= ( 2 + 3 ) / 12

= 5 / 12

b )

3 / 7 + 9 / 21

= 3 / 7 + 3 / 7

= ( 3 + 3 ) / 7

= 6 / 7

c )

5 / 8 + 1 / 4

= 5 / 8 + 2 / 8

= ( 5 + 2 ) / 8

= 7 / 8

d )

4 / 10 + 3 / 12

= 2 / 5 + 1 / 4

= 8 / 20 + 5 / 20

= ( 8 + 5 ) / 20

= 13 / 20

e )

4 / 15 + 7 / 10

= 8 / 30 + 21 / 30

= ( 8 + 21 ) / 30

= 29 / 30

f )

5 / 14 + 3 / 7

= 5 / 14 + 6 / 14

= ( 5 + 6 ) / 14

= 11 / 14

g )

4 / 8 + 3 / 20

= 1 / 2 + 3 / 20

= 10 / 20 + 3 / 20

= ( 10 + 3 ) / 20

= 13 / 20

h )

3 / 5 + 1 / 2

= 6 / 10 + 5 / 10

= ( 6 + 5 ) / 10

= 11 / 10

i )

7 / 10 + 12 / 14

= 7 / 10 + 6 / 7

= 49 / 70 + 60 / 70

= ( 49 + 60 ) / 70

= 109 / 70

j )

8 / 2 + 7 / 4

= 16 / 4 + 7 / 4

= ( 16 + 7 ) / 4

= 23 / 4