a) \(\dfrac{3}{5}\times x=\dfrac{4}{15}+\dfrac{7}{3}\)
\(\dfrac{3}{5}\times x=\dfrac{4}{15}+\dfrac{7\times5}{3\times5}\)
\(\dfrac{3}{5}\times x=\dfrac{4}{15}+\dfrac{35}{15}\)
\(\dfrac{3}{5}\times x=\dfrac{4+35}{15}\)
\(\dfrac{3}{5}\times x=\dfrac{39}{15}\)
\(\dfrac{3}{5}\times x=\dfrac{13}{5}\)
\(x=\dfrac{13}{5}:\dfrac{3}{5}\)
\(x=\dfrac{13}{5}\times\dfrac{5}{3}\)
\(x=\dfrac{13}{3}\)
b) \(x:\dfrac{3}{5}=\dfrac{7}{8}:\dfrac{10}{9}\)
\(x:\dfrac{3}{5}=\dfrac{7}{8}\times\dfrac{9}{10}\)
\(x:\dfrac{3}{5}=\dfrac{63}{80}\)
\(x=\dfrac{63}{80}\times\dfrac{3}{5}\)
\(x=\dfrac{189}{400}\)
a) 3/5 × x = 4/5 + 7/3
3/5 × x = 12/15 + 35/15
3/5 × x = 47/15
x = 47/15 : 3/5
x = 47/15 × 5/3
x = 47/9
b) x : 3/5 = 7/8 : 10/9
x : 3/5 = 7/8 × 9/10
x : 3/5 = 63/80
x = 63/80 × 3/5
x = 180/400
