=> 2x :(-0,35)=-21/20
=> 2x=0,3675
=> x=0,18375
study wel
k nha
mk xin cảm ơn mọi ngời nhiều
\(2x:\left(-0,35\right)=-1,4:1\frac{1}{3}\)
\(\Rightarrow2x:-\frac{7}{20}=-\frac{7}{5}:\frac{4}{3}\)
\(\Rightarrow2x:-\frac{7}{20}=-\frac{21}{20}\)
\(\Rightarrow2x=-\frac{21}{20}.\left(-\frac{7}{20}\right)\)
đến đêy thì gặp vấn đề ^^"
2x : (-0,35) = -1,4 : \(1\frac{1}{3}\)
<=> 2x = \(\frac{147}{400}\)
<=> x = \(\frac{147}{800}\)
\(\left(2x\right):\left(-0,35\right)=\left(-1,4\right):1\frac{1}{3}\)
\(\left(2x\right):-\frac{7}{20}=-\frac{7}{5}:\frac{4}{3}\)
\(\left(2x\right):-\frac{7}{20}=-\frac{7}{5}.\frac{3}{4}\)
\(\left(2x\right):-\frac{7}{20}=-\frac{21}{20}\)
\(\left(2x\right)=-\frac{21}{20}.\frac{-7}{20}\)
\(2x=\frac{147}{400}\)
\(x=\frac{147}{400}:2\)
\(x=\frac{147}{800}\)
Vậy \(x=\frac{147}{800}\)
Chúc bạn học tốt !!!
\(\left(2x\right)\text{ : }\left(-0,35\right)=\left(-1,4\right)\text{ : }1\frac{1}{3}\)
\(2x\text{ : }\frac{-7}{20}=-\frac{7}{5}\text{ : }\frac{4}{3}\)
\(2x\text{ : }\frac{-7}{20}=-\frac{21}{20}\)
\(2x=-\frac{21}{20}\text{ }\cdot\frac{-7}{20}\)
\(2x=\frac{147}{400}\)
\(x=\frac{147}{400}\text{ : }2\)
\(x=\frac{147}{800}\)
