Question

2/9 x 5/17 + 2/9 x 13/17 - 2/9 x 1/17 + 2018 7/9

1168,97+96,45x9-126,14:7

Giúp mk vs

 

Answer 1

Đề viết thiếu ko vậ?

Answer 2

#)Giải :

     \(\frac{2}{9}.\frac{5}{17}+\frac{2}{9}.\frac{13}{17}-\frac{2}{9}.\frac{1}{17}+2018\frac{7}{9}\)

\(=\frac{2}{9}\left(\frac{5}{17}+\frac{13}{17}-\frac{1}{17}\right)+2018\frac{7}{9}\)

\(=\frac{2}{9}.1+2018\frac{7}{9}\)

\(=\frac{2}{9}+2018\frac{7}{9}\)

\(=2018\frac{9}{9}=2019\)

             #~Will~be~Pens~#

Answer 3

\(\frac{2}{9}\times\frac{5}{17}+\frac{2}{9}\times\frac{13}{17}-\frac{2}{7}\times\frac{1}{17}+2018\frac{7}{9}\)

\(=\frac{2}{9}\times\left(\frac{5}{17}+\frac{13}{17}-\frac{1}{17}\right)+2018\frac{7}{9}\)

\(=\frac{2}{9}\times1+2018\frac{7}{9}\)

\(=\frac{2}{9}+2018\frac{7}{9}\)

\(=\frac{2}{9}+2018+\frac{7}{9}\)

\(=\left(\frac{2}{9}+\frac{7}{9}\right)+2018\)

\(=1+2018=2019\)

~ Hok tốt ~