Question

найди неизвестное число 700*(83400:m)=420000         (n+10986)*50=589650

Answer 1

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