Răspuns :
x*10-100=90.000:1.000
x*10-100=90
x*10=90+100
x*10=190
x=190:10
x=19
te rog coroana
Răspuns:
(x*10):100=90.000:1000 =>(x*10):100=90=>x*10=90*100 fiindcă se schimba semnele =>x*10=9000=>x=9000:10=>x=900 Verificare :900*10:100=90
x*10-100=90.000:1.000
x*10-100=90
x*10=90+100
x*10=190
x=190:10
x=19
te rog coroana
Răspuns:
(x*10):100=90.000:1000 =>(x*10):100=90=>x*10=90*100 fiindcă se schimba semnele =>x*10=9000=>x=9000:10=>x=900 Verificare :900*10:100=90