496a-597=48507
496а = 48507 + 597
496а = 49104
а = 99
10.000р-1.000р=9.000р (100%)
100:9000=90р - 1%
90*146=13.140=146.5% 146.5%-100%=46.5%
5/9х-2/9х=7/9-17/9
3/9х=-10/9
х=-10/3