Question

Tìm các số abc

a) 15abc : abc = 121

b) abab+ ab = 2550

Answer 1

a)15abc:abc=121

(15000+abc):abc=121

15000:abc+1=121

15000:abc =120

abc=125

b)abab+ab=2550

ab.101+ab.1=2550

ab.(101+1)=2550

ab.102=2550

ab=25

Answer 2

15abc:abc=121

(15000+abc):abc=121

15000:abc+abc:abc=121

15000:abc+1=121

15000:abc  =120

abc=15000:120=125

Cho mk 1 like nha!!!!

Answer 3

abab+ab=2550

ab*101+ab=2550

ab*(101+1)=2550

ab*102=2550

ab=2550:102=25

Answer 4

15abc:abc=121

(15000+abc):abc=121

15000:abc+1=121

15000:abc =120

abc=125

Answer 5

abab+ab=2550

ab.101+ab.1=2550

ab.(101+1)=2550

ab.102=2550

ab=25

Answer 6

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