Solve for r, c, m, h (complex solution)
r=\frac{21cm}{5}
c\in \mathrm{C}
m\in \mathrm{C}
h=5
Solve for r, c, m, h
r=\frac{21cm}{5}
c\in \mathrm{R}
m\in \mathrm{R}
h=5
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