1) \(x:3\dfrac{1}{15}=1\dfrac{1}{2}\)
\(x:\dfrac{46}{15}=\dfrac{3}{2}\)
\(x=\dfrac{3}{2}\cdot\dfrac{46}{15}\)
\(x=\dfrac{23}{5}\)
2) \(5\dfrac{4}{7}:x=13\)
\(\dfrac{39}{7}:x=13\)
\(x=\dfrac{39}{7}:13\)
\(x=\dfrac{39}{7}:\dfrac{13}{1}\)
\(x=\dfrac{39}{7}\cdot\dfrac{1}{13}\)
\(x=\dfrac{3}{7}\)
3) \(7x-3x=3,2\)
\(\left(7-3\right)x=\dfrac{16}{5}\)
\(4x=\dfrac{16}{5}\)
\(x=\dfrac{16}{5}:4\)
\(x=\dfrac{4}{5}\)
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