Răspuns :
6ab=20
6ab-8=20-8=12................................................................................
6ab-8=20-8=12................................................................................
[tex] \frac{2a}{5} = \frac{4}{3b}
[/tex]
2a·3b=4·5
6ab=20
⇒6ab-8=20-8=12
2a·3b=4·5
6ab=20
⇒6ab-8=20-8=12