Question

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2) Tim x

a)x + 4\(\frac{1}{5}\)= 5 \(\frac{2}{3}\)× 10\(\frac{1}{2}\)

b)\(\frac{24}{5}\)- x =2\(\frac{1}{4}\): 1\(\frac{3}{4}\)

Answer 1

a) \(x+4\frac{1}{5}=5\frac{2}{3}\times10\frac{1}{2}\)
    \(x+\frac{21}{5}=\frac{17}{3}\times\frac{21}{2}\)
    \(x+\frac{21}{5}=\frac{119}{2}\)
                   \(x=\frac{119}{2}-\frac{21}{5}\)
                   \(x=\frac{553}{10}\)
b) \(\frac{24}{5}-x=2\frac{1}{4}:1\frac{3}{4}\)
    \(\frac{24}{5}-x=\frac{9}{4}:\frac{7}{4}\)
    \(\frac{24}{5}-x=\frac{9}{4}.\frac{4}{7}\)
    \(\frac{24}{5}-x=\frac{9}{7}\)
                  \(x=\frac{24}{5}-\frac{9}{7}\)
                  \(x=\frac{123}{35}\)