22,4(5/16x-3/7)-35,1(9/13x-4/9)=-45,9

22,4(5/16х-3/7)-35,1(9/13х-4/9)=-45,9
224/10(5/16х-3/7)-351/10(9/13х-4/9)=-459/10
7х-48/5-243/10х+78/5=-459/10
7х-24,3х=-45,9+48/5-78/5
-17,3х=-45,9+96/10-156/10
-17,3х=-45,9+9,6-15,6
-17,3х=-51,9
х=-51,9÷(-17,3)
х=3