Question

tìm ab biết 1ab *126=201ab

Answer 1

1ab x 126 = 201ab

(100 + ab) x 126 = 20100 + ab

126ab - ab = 20100 -12600

125ab - ab = 20100 - 12600

125ab = 7500

ab = 7500 : 125 = 60

Vậy a=6

b=0

đúng thì ****

Answer 2

1abx126=201ab 

(100+ab)x126=20100+ab

12600+126ab=20100+ab

126ab - ab= 20100 - 12600

125ab= 7500

ab= 7500:125= 60

Vậy a = 6; b=0 .