Question

Tính 

\(\frac{5}{23}\times\frac{17}{26}+\frac{5}{23}\times\frac{9}{26}\)

Answer 1

\(\frac{5}{23}x\left(\frac{17}{26}+\frac{9}{26}\right)\)=\(\frac{5}{23}x\frac{26}{26}\)=\(\frac{5}{23}x1\)=\(\frac{5}{23}\)

Answer 2

\(\frac{5}{23}\)x \(\frac{17}{26}+\frac{5}{23}\)x \(\frac{9}{26}\)

=\(\frac{5}{23}\left(\frac{17}{26}+\frac{9}{26}\right)\)

=\(\frac{5}{23}\)x \(\frac{26}{26}\)

=\(\frac{5}{23}\)x 1

=\(\frac{5}{23}\)

Answer 3

   5/23 x 17/26 + 5/23 x 9/26

= 5/23 x ( 17/26 + 9/26)

= 5/23 x         26/26

= 5/23 x 1

= 5/23

dễ quá, chuyện nhỏ như con thỏ gặm cỏ ấy mà

Answer 4

\(\frac{5}{23}\times\frac{17}{26}+\frac{5}{23}\times\frac{9}{26}\)

\(=\frac{5}{23}\times\left(\frac{17}{26}+\frac{9}{26}\right)\)

\(=\frac{5}{23}\times1=\frac{5}{23}\)

Tk mk mk tk lại ! 

Answer 5

\(\frac{5}{23}x\frac{17}{26}+\frac{5}{23}x\frac{9}{26}\)

Ta có: \(\frac{5}{23}x\left(\frac{17}{26}+\frac{9}{26}\right)\)=  \(\frac{5}{23}x\left(\frac{17+9}{26}\right)\) =  \(\frac{5}{23}x\frac{26}{26}\)=    \(\frac{5}{23}x1\)  = \(\frac{5}{23}\)

Vậy : \(\frac{5}{23}x\frac{17}{26}+\frac{5}{23}x\frac{9}{26}=\frac{5}{23}\)

Answer 6

5/3*(17/26+9/26)

5/3*1

5/3

Answer 7

5/23 đó đúng 100%