Question

rút gon    \(A=\frac{7.9+14.27+21.36}{21.27+42.81+63.108}\)

CẢM ƠN !

Answer 1

\(A=\frac{7.9+14.27+21.36}{21.27+42.81+63.108}\)

\(A=\frac{7.9+7.2.27+7.3.36}{7.3.27+7.6.81+7.9.108}\)

\(A=\frac{7.9+7.54+7.108}{7.81+7.486+7.972}\)

\(A=\frac{7.\left(9+54+108\right)}{7.\left(81+486+972\right)}\)

\(A=\frac{7.171}{7.1539}=\frac{171}{1539}=\frac{1}{9}\)

Answer 2

7255/21198

Chúc bạn học tốt

Answer 3

dấu < này nè chắc vậy thui kick tớ nhe

Answer 4

7.9+7.54+7.108 

21.27+21.162+21.36

7.(9+54+108)

21.(27+162+36)

7.171

21.225

7.3².19

3.7.3².5²

19

3.5²

19

75