\(\left(\frac{4}{5}:\frac{6}{5}+\frac{1}{5}:\frac{1}{x}\right)\cdot30-26=54\)
\(\left(\frac{2}{3}+\frac{x}{5}\right)\cdot30=54\cdot26\)
\(\left(\frac{2}{3}+\frac{x}{5}\right)\cdot30=1404\)
\(\frac{2}{3}+\frac{x}{5}=1404:30\)
\(\frac{2}{3}+\frac{x}{5}=\frac{234}{5}\)
\(\frac{x}{5}=\frac{234}{5}-\frac{2}{3}\)
\(\frac{x}{5}=\frac{692}{15}\)
\(x=\frac{692}{15}\cdot5\)
\(x=\frac{692}{3}\)
\(\left(\frac{4}{5}:\frac{6}{5}+\frac{1}{5}:\frac{1}{x}\right)\times30-26=54\)
\(\Leftrightarrow\left(\frac{4}{5}\times\frac{5}{6}+\frac{1}{5}\times x\right)\times30=80\)
\(\Leftrightarrow\frac{2}{3}+\frac{1}{5}\times x=\frac{8}{3}\)
\(\Leftrightarrow\frac{1}{5}\times x=2\)
\(\Leftrightarrow x=2:\frac{1}{5}\)
\(\Leftrightarrow x=2\times5\)
\(\Leftrightarrow x=10\)
Vậy x = 10.
Matcha
\(\left(\frac{4}{5}\div\frac{6}{5}+\frac{1}{5}\div\frac{1}{x}\right)\times30-26=54\)
\(\Leftrightarrow\left(\frac{4}{5}\times\frac{5}{6}+\frac{1}{5}\times\frac{x}{1}\right)\times30=80\)
\(\Leftrightarrow\frac{2}{3}+\frac{x}{5}=\frac{8}{3}\)
\(\Leftrightarrow\frac{x}{5}=2\)
\(\Leftrightarrow x=10\)
Vậy\(x=10\)
