a fost răspuns

calculați:
[tex] \frac{a}{10} = \frac{7}{b} \\ \frac{3a}{20} = \frac{3}{b} [/tex]
​

Răspuns :

a/10=7/b

ab=10×7

ab=70

3a/20=3/b

3ab=20×3

3ab=60

ab=60:3

ab=20

David4556ask
ab=7x10. a/10=7/b
ab=70


3ab=20x3
3ab=60
ab=60:3
ab=20

Ask Alte intrebari