Question

упростите выражения
3,8(x+5)-1,8x

Answer 1

$\frac{19}{5} \times (x + 5) - \frac{9}{5} x \\ \\ \frac{1}{5} \times (19(x + 5) - 9x) \\ \\ \frac{1}{5} \times (19x + 95 - 9x) \\ \\ \frac{1}{5} \times (10x + 95) \\ \\ \frac{1}{5} \times 5(2x + 19) \\ \\ 5 \times \frac{1}{5} \times (2x + 19) \\ \\ \frac{5}{5} \times (2x + 19)$

Answer 2

3,8 (х+5) - 1,8х = 3,8х - 1,8х + 19 = 2х + 19