Question

[Mina Rainy Cat]

Tìm x : 

\(-\frac{4}{5}\) . \(|x|\) + \(1\frac{1}{3}\) . \(|x|\) = \(1\frac{1}{3}\)

Help me !

Tặng :

https://anhdephd.com/hinh-nen-anime-chibi-de-thuong-va-dang-yeu-qua-troi.html               

https://anhdephd.com/25-hinh-nen-anime-dep-den-ngop-tho.html                                   

https://anhdephd.com/20-hinh-nen-anime-thien-than-dep-cho-dien-thoai.html

Answer 1

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\(\frac{-4}{5}.\left|x\right|+1\frac{1}{3}.\left|x\right|=1\frac{1}{3}\)
\(\left(\frac{-4}{5}+1\frac{1}{3}\right).\left|x\right|=1\frac{1}{3}\)\(\frac{8}{15}.\left|x\right|=\frac{4}{3}\)

\(\left|x\right|=\frac{4}{3}\div\frac{8}{15}\)

\(\left|x\right|=\frac{5}{2}\)\(\Rightarrow x=\pm\frac{5}{2}\)

Answer 2

[♥Ngọc's♥Ken'z]

Ta có: \(-\frac{4}{5}.\left|x\right|+1\frac{1}{3}.\left|x\right|=1\frac{1}{3}\)

=> \(\left(-\frac{4}{5}+1\frac{1}{3}\right).\left|x\right|=1\frac{1}{3}\) => \(\frac{8}{15}.\left|x\right|=\frac{4}{3}\)=> \(\orbr{\begin{cases}x=\frac{5}{2}\\x=-\frac{5}{2}\end{cases}}\)

#Hk_tốt

#Ken'z