17/21y+9/14=5/21
-\frac{9}{14}[/tex] [tex]\frac{17}{21}y
17/21у=5/21-9/14
17/21у=-17/42
у=-17/42:17/21
у=-1/2
![\frac{17}{21}y+\frac{9}{14}[/tex]=[tex]\frac{5}{21} [tex]\frac{17}{21}y=\frac{5}{21}](https://tex.z-dn.net/?f=%5Cfrac%7B17%7D%7B21%7Dy%2B%5Cfrac%7B9%7D%7B14%7D%5B%2Ftex%5D%3D%5Btex%5D%5Cfrac%7B5%7D%7B21%7D+%5Btex%5D%5Cfrac%7B17%7D%7B21%7Dy%3D%5Cfrac%7B5%7D%7B21%7D "\frac{17}{21}y+\frac{9}{14}[/tex]=[tex]\frac{5}{21} [tex]\frac{17}{21}y=\frac{5}{21}")
-\frac{9}{14}[/tex]