Question

-10x(-3supra7) va rog mult

Answer 1

- 10 x ( - 3/7) = 30/7   ( - x - = +)

Answer 2

$- 10 \times ( - \frac{3}{7}) = - ( - 4\frac{2}{7}) = - ( - \frac{4 \times 7 + 2}{7}) = - ( - \frac{28 + 2}{7}) = - ( - \frac{30}{7}) = \frac{30}{7} = 4\frac{2}{7}$