e) \(3\dfrac{1}{2}x-75\%=7\dfrac{1}{4}\)
\(\dfrac{7}{2}x-\dfrac{3}{4}=\dfrac{29}{4}\)
\(\dfrac{7}{2}x=\dfrac{29}{4}+\dfrac{3}{4}\)
\(\dfrac{7}{2}x=8\)
\(x=8:\dfrac{7}{2}\)
f) \(0,75x+\dfrac{4}{9}=-2\dfrac{1}{3}\)
\(\dfrac{3}{4}x+\dfrac{4}{9}=-\dfrac{7}{3}\)
\(\dfrac{3}{4}x=\left(-\dfrac{7}{3}\right)-\dfrac{4}{9}\)
\(\dfrac{3}{4}x=-\dfrac{25}{9}\)
\(x=-\dfrac{25}{9}:\dfrac{3}{4}\)
\(x=-\dfrac{100}{27}\)
\(x=\dfrac{16}{7}\)
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