Toán Tính nhanh : -5/9 x -6/13 + 5/-9 x -5/13 – 5/9 06/10/2021 By Athena Tính nhanh : -5/9 x -6/13 + 5/-9 x -5/13 – 5/9
Đáp án: $\dfrac{-5}{9} . \dfrac{-6}{13} + \dfrac{5}{-9} . \dfrac{-5}{13} – \dfrac{5}{9}$ $ = \dfrac{-5}{9} .( \dfrac{-6}{13} + \dfrac{-5}{13} +1 )$ $ = \dfrac{-5}{9} . \dfrac{2}{13}$ $ = \dfrac{-10}{117}$ Trả lời
$\frac{-5}{9} . \frac{-6}{13} + \frac{5}{-9} . \frac{-5}{13} – \frac{5}{9}$ = $\frac{-5}{9} . \frac{-6}{13} + \frac{-5}{9} . \frac{-5}{13} + \frac{-5}{9} . 1$ = $\frac{-5}{9} . (\frac{-6}{13} + \frac{-5}{13} + 1)$ = $\frac{-5}{9} . 0$ = $0$ Cho mk câu trả lời hay nhất nhé bạn Trả lời
Đáp án:
$\dfrac{-5}{9} . \dfrac{-6}{13} + \dfrac{5}{-9} . \dfrac{-5}{13} – \dfrac{5}{9}$
$ = \dfrac{-5}{9} .( \dfrac{-6}{13} + \dfrac{-5}{13} +1 )$
$ = \dfrac{-5}{9} . \dfrac{2}{13}$
$ = \dfrac{-10}{117}$
$\frac{-5}{9} . \frac{-6}{13} + \frac{5}{-9} . \frac{-5}{13} – \frac{5}{9}$
= $\frac{-5}{9} . \frac{-6}{13} + \frac{-5}{9} . \frac{-5}{13} + \frac{-5}{9} . 1$
= $\frac{-5}{9} . (\frac{-6}{13} + \frac{-5}{13} + 1)$
= $\frac{-5}{9} . 0$
= $0$
Cho mk câu trả lời hay nhất nhé bạn