Question

-0,4(3х-1)+8(0,8х-0,3) СРОЧНО ДАМ 10 ГОЛОСОВ​

Answer 1

ответ:

$- \frac{2}{5} \times (3x - 1) + 8(0.8x - 0.3) \\ - \frac{2}{5} \times (3x - 1) + 8( \frac{4}{5} x - 0.3) \\ - \frac{2}{5} \times (3x - 1) + 8( \frac{4}{5}x - \frac{3}{10}) \\ - \frac{2}{5} \times (3x - 1 - 5 \times 4( \frac{4}{5}x - \frac{3}{10})) \\ - \frac{2}{5} \times (3x - 1 - 20( \frac{4}{5}x - \frac{3}{10} )) \\ - \frac{2}{5} \times (3x - 1 - 16x + 6) \\ - \frac{2}{5} \times ( - 13x - 1 + 6) \\ - \frac{2}{5} \times ( - 13x + 5) \\ - 0.4(13x + 5)$

Answer 2

-0,4*(3х-1)+8(0,8х-0,3)=-1,2х+0,4+6,4х-2,4=5,2х-2.