Question

решить уравнение -y-1 3/14=-2 7/10

Answer 1

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

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

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

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

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

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

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

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

Answer 2

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