9,4х+(2х-11 3/4у)-3 5/9у

9,4х + (2х - 11 [latex] \frac{3}{4} [/latex] у) - 3 [latex] \frac{5}{9} [/latex]у = 9,4х + 2х -  [latex] \frac{47}{4} [/latex] у -  [latex] \frac{32}{9} [/latex]у = 11,4x -  [latex] \frac{423 + 128}{36} [/latex] у = 11,4x -  [latex] \frac{551}{36} [/latex]у =  11,4x - 15 [latex] \frac{11}{36} [/latex]у