\(1-x=\dfrac{49}{65}\cdot\dfrac{5}{7}\)
\(1-x=\dfrac{245}{455}\)
\(1-x=\dfrac{7}{13}\)
\(-x=\dfrac{7}{13}-1\)
\(-x=-\dfrac{6}{13}\)
\(x=-\dfrac{6}{13}:\left(-1\right)\)
\(x=\dfrac{6}{13}.\)
\(Vậy....\)
\(\dfrac{x}{17}=\dfrac{28}{9}\cdot\dfrac{-9}{17}\)
\(\dfrac{x}{17}=-\dfrac{28}{9}\cdot\dfrac{9}{17}\)
\(\dfrac{x}{17}=-\dfrac{28}{17}\)
\(x=17\left(-\dfrac{28}{17}\right)\)
\(x=-28\)
\(Vậy.....\)
Đúng 3
Bình luận (2)
