...........................:72=135:243

40:72=135:243

x:72=\(\frac{5}{9}\)-> x=\(\frac{5}{9}\)x72=\(\frac{5}{8}\)

40/72  = 135/243 = 5/9

40/72  = 135/243 = 5/9

40/72=135/243=5/9

chỗ trống là 40

40 : 72 = 135 : 243 

40

ta coi số phải tìm là x

\(x:72=135:243\)

\(x:72=\frac{5}{9}\)

       \(x=\frac{5}{9}\cdot72\)

       \(x=40\)

Vậy \(x=40\)

goi so can tim la x

suy ra x/72=135/243

suy ra x/72=0.55

suy ra x=0.55*72=40

......:72=5/9

......= 5/9 * 72=40

Vậy 40:72= 135:243

40 bạn nhé

....................:72=135/243nen ....................=40