Question

Aflati 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) 45:x×100=900
45:×=900:100
45:x=9
x=45:9
x=5

25×4:x=20
100:x=20
x=100:20
x=5

b)824-240:x=800
240:x=824-800
240:x=24
x=240:24
x=10

245+50×x=745
50×x=745-245
50×x=500
x=500:50
x=10

c)x:9×8=808
x:9=808:8
x:9=101
x=101×9
x=909

x×6:9=32
x×6=32×9
x×6=288
x=288:6
x=48

"multumesc" si o coroana te rog