\(m=\left(2\frac{1}{3}+3,5\right):\left(-4\frac{1}{6}+3\frac{1}{7}\right)+7,5\)
\(m=\left(\frac{7}{3}+\frac{7}{2}\right):\left(-\frac{25}{6}+\frac{22}{7}\right)+\frac{15}{2}\)
\(m=\frac{35}{6}:\left(-\frac{43}{42}\right)+\frac{15}{2}\)
\(m=\frac{35}{6}\cdot\left(-\frac{42}{43}\right)+\frac{15}{2}\)
\(m=-\frac{245}{43}+\frac{15}{2}\)
\(m=\frac{155}{86}\)