Question

Как решить этот пример ???

Answer 1

$14 \times { (\frac{1}{7} })^{2} - 23 \times \frac{1}{7} = \\ = \frac{14}{1} \times \frac{1}{49} - \frac{23}{1} \times \frac{1}{7} = \\ = \frac{14}{49} - \frac{23}{7} = \\ = \frac{14}{49} - \frac{161}{49} = \\ = - \frac{147}{49} = \\ = - 3$
Ответ: -3

Answer 2

$14 \times ( \frac{1}{7} ) {}^{2} \times \frac{1}{7} = 14 \times \frac{1}{49} - \frac{23}{7} = 2 \times \frac{1}{7} - \frac{23}{7} = \frac{2}{7} - \frac{23}{7} = - 3$