Question

5х - 9 при х= $2\frac{1}{3}$

Answer 1

$5 \times 2\frac{1}{3} - 9 = 5 \times \frac{7}{3} - 9 = \frac{35}{3} - 9 = \frac{35}{3} - \frac{27}{3} = \frac{8}{3} = 2 \frac{2}{3}$