$\frac{-7}{25}$ . $\frac{11}{13}$ + $\frac{-7}{25}$ . $\frac{2}{13}$ – $\frac{18}{25}$
$\frac{-7}{25}$ . $\frac{11}{13}$ + $\frac{-7}{25}$ . $\frac{2}{13}$ – $\frac{18}{25}$
By Reese
By Reese
$\frac{-7}{25}$ . $\frac{11}{13}$ + $\frac{-7}{25}$ . $\frac{2}{13}$ – $\frac{18}{25}$
Đáp án:
Giải thích các bước giải:
$\dfrac{-7}{25}.\dfrac{11}{13}+\dfrac{-7}{25}.\dfrac{2}{14}-\dfrac{18}{25}$
$ $
$=\dfrac{-7}{25}.1-\dfrac{18}{25}$
$ $
$=\dfrac{-7}{25}-\dfrac{18}{25}$
$ $
$=-1$
Bạn tham khảo :
-7/25 .11/13 + -7/25 .2/13 – 18/25
= -7/25 ( 11 / 13 + 2/13 ) – 18/25
= -7/25 . 13/13 – 18/25
= -7 /25 . 1 – 18/25
= -7 / 25 – 18/25
= -7 – 18/25
= -25 /25
= -1