31,8-(1/7+4/7y)=1,2/3+4,8

Question

31,8-(1/7+4/7y)=1,2/3+4,8

Comments

31,8-(1/7+4/7y)=1,2/3y+4,8

Answer 1

31,8-(1/7+4/7у)=1,2/3+4,8
159/5-1/7-4/7у=0,4+4,8
1108/35-4/7у-5,2
1108/35-4/7у=26/5
1108-20у=182
-20у=182-1108
-20у=-926
у=463/10

Comments

это не верный ответ