Question

Пж эти 3 уроврения только полностью расписать пж

Answer 1

$3 \frac{1}{5} x + 2.9x = 36.6 \\ \frac{16}{5} x + \frac{29}{10} x = 36.6 \\ \frac{61}{10} x = 36.6 \\ x = \frac{10}{61} \times 36.6 \\ x = \frac{10}{61} \times \frac{183}{5} \\ x = 2 \times 3 \\ x = 6$

$5.6x - 2.4x = 4.8 \\ 3.2x = 4.8 \\ x = 1.5$

$9x - 7 \frac{9}{20} x = 4.03 \\ 9x - \frac{149}{20} x = 4.03 \\ \frac{31}{20} x = 4.03 \\ x = \frac{20}{31} \times 4.03 \\ x = \frac{20}{31} \times \frac{403}{100} \\ x = \frac{13}{5}$