Question

3 supra 5 = x supra 10


si


7 supra x = 21 supra 15
pls urgent rezolvare
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Answer 1

Răspuns:

3/5=x/10

3*10/5=6

=> x= 6

7/x=21/15

15*7/21=105/21=5

=> x=5

Answer 2

Răspuns:

3=x

5 10

3 ori 10=5 ori x

30=5x

x=30:5

x=6

7=21

x 15

15 ori 7=x ori 21

105=21x

x=105:21

x=5