Question

Se considera proportia a/b=13/4. Formand proportii derivate, determinati numerele a si b in fiecare din cazurile:
a) a-b=27

Answer 1

[tex] \frac{a}{b} = \frac{13}{4} \\ \frac{a-b}{b} = \frac{13-4}{4} \\ \frac{27}{b} = \frac{9}{4} \\ b= \frac{27\cdot 4}{9} =12\\ a=27+12=39[/tex]