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Dacă [tex] \frac{a}{b} [/tex]=[tex] \frac{3}{8} [/tex],aflaţi valoarea rapoartelor [tex] \frac{a+b}{b-a} [/tex] şi [tex] \frac{a+3}{b+8} [/tex].

Răspuns :

a=3b/8
(3b/8+b)/(b-3b/8)=(3b+8b)/(8b-3b)=11b/5b=11/5
(3b/8 +3)/(b+8)=(3b+24b)/8 :(b+8)/1=27b/8(b+8)