a) x : 3 = 205

        x = 205 x 3 

        x = 615

b) 2/5 : x = 1/3

            x = 2/5 : 1/3

            x = 6/5

\(\left(\frac{47}{7}+\frac{5}{3}\right)-\frac{26}{7}\)

\(=\left(\frac{47}{7}-\frac{26}{7}\right)+\frac{5}{3}\)

\(=3+\frac{5}{3}\)

\(=\frac{9}{3}+\frac{5}{3}=\frac{14}{3}\)

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