Question

y x 2 3/5 + 1 = 3 9/10
y : 4 1/4 - 3 = 3 1/5

Answer 1

*) \(y\times2\dfrac{3}{5}+1=3\dfrac{9}{10}\)

\(y\times\dfrac{13}{5}+1=\dfrac{39}{10}\)

\(y\times\dfrac{13}{5}=\dfrac{39}{10}-1\)

\(y\times\dfrac{13}{5}=\dfrac{29}{10}\)

\(y=\dfrac{29}{10}:\dfrac{13}{5}\)

\(y=\dfrac{87}{50}\)

*) \(y:4\dfrac{1}{4}-3=3\dfrac{1}{5}\)

\(y:\dfrac{17}{4}-3=\dfrac{16}{5}\)

\(y:\dfrac{17}{4}=\dfrac{16}{5}+3\)

\(y:\dfrac{17}{4}=\dfrac{31}{5}\)

\(y=\dfrac{31}{5}\times\dfrac{17}{4}\)

\(y=\dfrac{527}{20}\)