Question

[chu văn thảo]

5 nhân x + 7,3 = 54,7                          x nhân 78,2 = 54 + 375,36

Gấp 

Answer 1

[Hquynh]

\(5x+7,3=54,7\\ \Rightarrow5x=54,7-7,3\\ \Leftrightarrow5x=47,4\\ \Leftrightarrow x=47,4:5=\dfrac{237}{25}\)

Vậy \(x=\dfrac{237}{25}\)

\(x\times78,3=54+375,36\\ \Leftrightarrow x\times78,3=429,36\\ \Leftrightarrow x=429,36:78,3\\ \Leftrightarrow x=\dfrac{7156}{1305}\)

Vậy \(x=\dfrac{7156}{1305}\)