Question

Tìm a biết 63/105 = a/135

 

Answer 1

\(\frac{63}{105}=\frac{a}{135}\)

=> 63 . 135 = a . 105

=> a = \(\frac{63.135}{105}\)

=> a = 81

Vậy a = 81

Answer 2

63/105 = a/135

9/15 = a:9/15

a:9 = 9

a = 9 * 9

a = 81

Answer 3

81 nha