Question

tính nhanh:

a) 32x50/48x75= 

b) 63x81/135x84

Answer 1

a)\(\frac{32x50}{48x75}=\frac{2x2}{3x3}=\frac{4}{9}\)

Answer 2

còn b)

Answer 3

32x50/48x75

=2x4x4x5x2x5/4x3x2x2x5x5x3

=4/3x3=4/9

Answer 4

ờ 

b)\(\frac{63x81}{135x84}=\frac{7x27}{15x28}=\frac{189}{420}=\frac{9}{20}\)