Question

sctie cifrele lipsa pentru a obtine fractii egale 5supra9=10supra?=15supra?

Answer 1

5 supra 9=10 supra x=15 supra y
5x=9*10
5x=90
x=90:5
x=16
10 supra 16=15 supra y
10y=16*15
10y=240
y=240:10
y=24

Answer 2

5/9=10/x
5x=90
x=18

5/9=15/y
5y=135
y=27

9/5=10/18=15/27=0.5