2) (9564-(8352-(848-21)+(8х-41)))-211=1813
9564-(8352-(848-21)-(8х-41))=2024
8352-827+(8х-41=7540
8х-41=7540-8352+827
8х-41=15
х=7
2) 450-((18000-(112500/25-х)*6)/90)=338
(18000-(4500-х)*6)/90=112
(18000-(4500-х)*6)=10080
18000-27000+6х=10080
-9000+6х=10080
6х=19080
х=3180