Question

Помогите решить номер 422( 1 2)

Answer 1

1) $\frac{2,2x}{3,5} = \frac{22}{5} \\ \frac{22x}{35} - \frac{154}{35} = 0 \\ 22x -154 = 0 \\ x = \frac{154}{22} = 7$

2) $\frac{9}{5} = \frac{6,3x}{7} \\ \frac{9}{5} - \frac{0,9x}{1} \\ \frac{9-4,5x}{5} = 0 \\ -4,5x = - 9 \\ x = 2$