Question

Afla nr necunoscute 207+x+1099=4120; y+(1125-466)=7331; 1478+z-456=1144 Ofer coroana

Answer 1

$a).207+x+1099=4120 \\ x=4120-207-1099 \\ x=2814 \\ b). y+(1125-466)=7331 \\ y+ 659=7331 \\ y=7331-659 \\ y=6672 \\ c).1478+z-456=1144 \\ z=1144-1478+456 \\ z=122$

Answer 2

a) 207+x+1099=4120
   x=4120-207-1099
   x=2814

b) y+(1125-466)=7331
   y+659=7331
   y=7331-659
   y=6672

c)1478+z-456=1144
  z=144-1478+456
  z=122