110*х=9900 у*78=19.734 1800/z=45 u/261=147 50*(v-173)=2500 1748/w+77=123
110*х=9900 u/261=147 x=9900/110 u=147*261 x=90 u=38367 50*(v-173)=2500 у*78=19734 v=2500/50+173 у=19734:78 v=223 у=253 1748/w+77=123 1800:z=45 w=1748/(123-77) z=1800/45 w=38 z=40