$$5=m+3\frac{4}{7}$$
$m = \frac{10}{7} = 1\frac{3}{7} \approx 1.428571429$
$$35=7m+3\times 7+4$$
$$35=7m+21+4$$
$$35=7m+25$$
$$7m+25=35$$
$$7m=35-25$$
$$7m=10$$
$$m=\frac{10}{7}$$
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