Question

решить уравнение -y-1 3/14=-2 7/10

Answer 1

$-y-1\frac{3}{14}=-2\frac{7}{10}$

$y+1\frac{3}{14}=2\frac{7}{10}$

$y=2\frac{7}{10}-1\frac{3}{14}$

$y=2\frac{7*7}{10*7}-1\frac{3*5}{14*5}$

$y=2\frac{49}{70}-1\frac{15}{70}$

$y=2-1\frac{49-15}{70}$

$y=1\frac{34}{70}=1\frac{17}{35}$

$y=1\frac{17}{35}$

Answer 2

Смотри..........................................