Question

1/5m-1/3n якщо m=35, n=-18​

Answer 1

$m = 35$, $n = - 18$

$\frac{1}{5} m - \frac{1}{3} n = \frac{1}{5} \times 35 - \frac{1}{3} \times ( - 18) = \frac{1 \times 35}{5} - \frac{1 \times ( - 18)}{3} = \frac{35}{5} - \frac{ - 18}{3} = \frac{35}{5} - ( - \frac{18}{3} ) = \frac{35}{5} + \frac{18}{3} = 7 + 6 = 13$

$\frac{1}{5m} - \frac{1}{3n} = \frac{1}{5 \times 35} - \frac{1}{3 \times ( - 18)} = \frac{1}{175} - \frac{1}{-54} = \frac{1}{175} - (- \frac{ 1}{54}) = \frac{1}{175} + \frac{1}{54} = \frac{1 \times 54}{175 \times 54} + \frac{1 \times 175}{54 \times 175} = \frac{54}{9450} + \frac{175}{9450} = \frac{54 + 175}{9450} = \frac{229}{9450}$