Question

[Nguyễn Ngu Phong Si]

x x 13 và 1/3 = (x + 25) x 12 và 1/2

           Nhanh nhất mik tick

Answer 1

[Huỳnh Quang Sang]

\(x\times13\frac{1}{3}=\left(x+25\right)\times12\frac{1}{2}\)

\(\Rightarrow x\times\frac{40}{3}=x\times12\frac{1}{2}+25\times12\frac{1}{2}\)

\(\Rightarrow x\times\frac{40}{3}=x\times\frac{25}{2}+25\times\frac{25}{2}\)

\(\Rightarrow x\times\frac{40}{3}=x\times\frac{25}{2}+\frac{625}{2}\)

\(\Rightarrow x\times\frac{40}{3}-x\times\frac{25}{2}=\frac{625}{2}\)

\(\Rightarrow x\times\left(\frac{40}{3}-\frac{25}{2}\right)=\frac{625}{2}\)

\(\Rightarrow x\times\frac{5}{6}=\frac{625}{2}\Rightarrow x=\frac{625}{2}:\frac{5}{6}=\frac{625}{2}\cdot\frac{6}{5}=375\)

Vậy x = 375