Question

Х+(23+37)×50=45×100
Х-(81-72)×100=50×40

Answer 1

Х+(23+37)×50=45×100
х+60*50=45*100
х=45*100-30*100=15*100=1500


Х-(81-72)×100=50×40
х-9*100=20*100
х=20*100+9*100=29*100=2900

Answer 2

........................