Question

Tính:

\(\left(\frac{-5}{9}\right).\frac{3}{11}+\left(\frac{-13}{28}\right).\frac{3}{11}\)

Answer 1

các bạn ơi làm giùm mk nhá,ai nhanh nhất mk k cho

Answer 2

\(\left(-\frac{5}{9}\right).\frac{3}{11}+\left(-\frac{13}{28}\right).\frac{3}{11}\)

\(=\frac{3}{11}.\left(-\frac{5}{9}+\left(-\frac{13}{28}\right)\right)\)

\(=\frac{3}{11}.\frac{-257}{252}\)

\(=-\frac{257}{924}\)

Answer 3

thanks "Death Note"

Answer 4

\(\left(-\frac{5}{9}\right)\cdot\frac{3}{11}+\left(-\frac{13}{28}\right)\cdot\frac{3}{11}=\frac{3}{11}\left[\left(-\frac{5}{9}\right)+\left(-\frac{13}{28}\right)\right]=\frac{3}{11}\cdot\left(-\frac{257}{252}\right)=-\frac{257}{924}\)

Answer 5

(-5/9) . 3/11 + (-13/28) . 3/11

= [(-5/9) + (-13/28)] . 3/11

=(-257/252) . 3/11

=-257/924

Ra số to quá nên mk ko chắc đúng hay ko.

Answer 6

cảm ơn các bạn rất nhìu

Answer 7

(-5/9).3/11+(-13/28).3/11

[(-5/9)+(-13/28)].3/11

-257/252.3/11

-257/924