Найди неизвестное число 700*(83400:m)=420000 (n+10986)*50=589650
1)700*(83400:m)=420000 83400:m=420000:700 83400:m=600 m=83400:600 m=139 2)(n+10986)*50=589650 n+10986=589650:50 n+10986=11793 n=11793-10986 n=807