Question

Știind că a/b = 5/3 si ca a = 5/6,aflați valoarea lui b
Va rog repedee!!! Dau coroana!!! ​

Answer 1

Răspuns:

1/2

Explicație pas cu pas:

a/b=5/3, de aici avem: b=3a/5

Cum a=5/6, b=3/5×5/6=1/2

Answer 2

$\it a=\dfrac{5}{6}\ \ \ \ \ (*)\\ \\ \\ \dfrac{a}{b}=\dfrac{5}{3} \Rightarrow a\cdot\dfrac{1}{b}=\dfrac{5}{3}\ \stackrel{(*)}{\Longrightarrow}\ \dfrac{5}{6}\cdot\dfrac{1}{b}=\dfrac{5}{3} \Rightarrow \dfrac{1}{b}=\dfrac{5}{3}\cdot\dfrac{6}{5} \Rightarrow \dfrac{1}{b}=2 \Rightarrow b=\dfrac{1}{2}$