Question

a= 4,
a supra 3 - 3 supra a = 7 supra 12
a =?

Answer 1

Răspuns:

a=4

se inlocuieste a

4/3-3/4 aducem la acelasi numitor comun care este 12

16/12-9/12=7/12 propozitie adevarata

Answer 2

a=4

$\frac{a}{3} - \frac{3}{a} = \frac{4}{3} - \frac{3}{4} = \frac{16}{12} - \frac{9}{12} = \frac{7}{12} \: (adevarat)$