375*х=9000, х=24
9000:375=24
1500+х=9000, х=7500
9000-1500= 7500
375*х=750, х=2
750:375=2
375*х=5=7500, х=20
7500:375=20
9000-х=1500, х=7500
9000-1500=7500
423*х=2961, х=7
2961:423=7
423*х=21150, х=50
21150:423=50
24111-х=2961, х=21150
24111-2961=21150
24111-х=21150, х=2961
24111-21150=2961
21150+х=24111, х=2961
24111-21150=2961
1961+х=24111, х=21150
24111-1961=21150
24111:х=57, х=423
24111:57=423
24111:х=423, х=57
24111:423=57