1. 225/5*х=90
45*х=90
х=90/45
х=2
2. 458/2*х=916
229*х=916
Х=916/229
Х=4
3. 369/9*х=205
41*х=205
Х=205/41
Х=5
5х=20250 / :5
х= 4050
2х= 916х458
2х=419528
Х=209769
9х=205х369
9х=75645
Х=8405
1. 225/5*х=90
45*х=90
х=90/45
х=2
2. 458/2*х=916
229*х=916
Х=916/229
Х=4
3. 369/9*х=205
41*х=205
Х=205/41
Х=5