Question

1,4 y - 0,5(5 y - 3) = - 0.6 (y - 2)
помогите срочно пж

Answer 1

Ответ:

$1.4y - 0.5(5y - 3) = - 0.6(y - 2) \\ 1.4y - 2.5y + 1.5 = - 0.6y + 1.2 \\ - 1.1y + 1.5 + 0.6y - 1.2 = 0 \\ - 0.5y + 0.3 = 0 \\ - 0.5y = - 0.3 \\ 0.5y = 0.3 \: \: \: \: \: \: \: \: \: \: \: ( \times 10) \\ 5y = 3 \\ y = \frac{3}{5} = \frac{6}{10} \\ y = 0.6$