Решите уравнение 2/3 (3/8-1/2y) = 5 1/2y- 17 3/4
2/3( 3/8 - 1/2y ) = 5 1/2y - 17 3/4 1/4 - 1/3y = 5 1/2y - 17 3/4 5 1/2y + 1/3y = 1/4 + 17 3/4 5 3/6y + 2/6y = 18 5 5/6y = 18 y = 18 : ( 35/6 ) y = 108/35 y = 3 3/35