Question

Tìm a ; b biết :

abab +ab = 2550

Answer 1

copy nè: abab+ab=2550

ab*101+ab=2550

ab*(101+1)=2550

ab*102=2550

ab=2550:102=25

Answer 2

=>101ab+ab=2550

=>102ab=2550

=>ab=2550:102

=>ab=25

Answer 3

abab + ab = 2550

ab x 101 + ab x 1 = 2550

ab x ( 101 + 1 ) = 2550

ab x 102 = 2550

ab = 25

Answer 4

abab+ab=2550

abx100+ab+ab=2550

abx100+abx2=2550

abx(100+2)=2550

abx102=2550

ab=2550:102

ab=25