Question

Afla numerele necunoscute.a) 45:X*100=900; 25*4:X=20; b)824-240:X=800; 245+50*X=745; c)X:9*8=808; X*6:9=32.

Answer 1

a) x=5 ; x=5
b) x=10; x=10
c) x=909; x=48

Answer 2

45÷X×100=900 (45÷X se pune intr-un dreptunghi) 45÷X=900÷100 45÷X=9 X=45÷9 X=5