Question

a.19/51 + 13/51                                b.26/30 -7/15                                

Answer 1

a: 19/51+13/51=32/51

b: 26/30-7/15=13/15-7/15=6/15=2/5

Answer 2

a.19/51 + 13/51=32/51                               

b.26/30 -7/15= 26/30 - 14/30 = 12/30 = 2/5

Answer 3

a,=32/51

b,=13/15-7/15

=8/15

Answer 4

a/=32/51

b/=26/30-14/30

=12/30=2/5

Answer 5

`a)19/51+13/51=[19+13]/51=32/51`

`b)26/30-7/15=26/30-14/30=[26-14]/30=12/30=2/5`

Answer 6

ê đúng hơn là 19/17

 

Answer 7

\(a,\) \(\dfrac{19}{51}+\dfrac{13}{51}=\dfrac{19+13}{51}=\dfrac{32}{51}\)

\(b,\) \(\dfrac{26}{30}-\dfrac{7}{15}=\dfrac{26}{30}-\dfrac{14}{30}=\dfrac{12}{30}=\dfrac{2}{5}\)

Answer 8

a) $\dfrac{19}{51}$ + $\dfrac{13}{51}$ = $\dfrac{32}{51}$

b) $\dfrac{26}{30}$ - $\dfrac{7}{15}$ = $\dfrac{26}{30}$  - $\dfrac{14}{30}$ = $\dfrac{12}{30}$ = $\dfrac{6}{15}$