Question

3/5у=2,9-1/5 пж быстрее​

Answer 1

$\frac{3}{5} y = 2.9 - \frac{1}{5} \\ \frac{3}{5} y = \frac{29}{10} - \frac{2}{10} \\ \frac{3}{5} y = \frac{27}{10} \\ y = \frac{27}{10} \div \frac{3}{5} \\ y = \frac{27}{10} \times \frac{5}{3} \\ y = \frac{9}{2}$

Відповідь: у=4,5

Answer 2

Ответ:

3/5•y = 2.9 - 1/5

0.6•y = 2.9 - 0.2

0.6•y = 2.7

y = 2.7 / 0.6

y = (27/10) / (6/10)

y = 27/10 • 10/6

y = 27/6 = 9/2 = 4.5

y = 4.5