Question

y + 11 = 5y + 9 пожалуйста

Answer 1

Объяснение:

$y + 11 = 5y + 9$

$(y - 5y) + 11 = (5y - 5y) + 9$

$- 4y + 11 = (5y - 5y) + 9$

$- 4y + 11 = 9$

$(11 - 11) - 4y = 9 - 11$

$- 4y = 9 - 11$

$- 4y = - 2$

$\frac{ - 4y}{ - 4} = \frac{ - 2}{ - 4}$

$y = \frac{ - 2}{ - 4}$

$\frac{ - 2}{ - 4} = \frac{ - 2 \times 1}{ - 2 \times 2} = \frac{ - 2}{ - 2} \times \frac{1}{2} = \frac{1}{2}$

$y = \frac{1}{2}$