x*10=45 000 x/100=4000 х + 190 = 400
x=45 000/10 x=4000*100 x=190-400
x=4500 x=400 000 x=210
100*x=45 000 4000/x=100 х - 190 = 400
x=45 000/100 x=4000/100 x=400+190
x=450 x=40 x=590
x*10=45 000 x/100=4000 х + 190 = 400
x=45 000/10 x=4000*100 x=190-400
x=4500 x=400 000 x=210
100*x=45 000 4000/x=100 х - 190 = 400
x=45 000/100 x=4000/100 x=400+190
x=450 x=40 x=590