Question

Aflati termenul necunoscut din urm. proportii:
a. x/3=5/1
b. x/0,5=1/2 /3

Answer 1

a)$\frac{x}{3}= \frac{5}{1}$
x=3*5
x=15
b)$\frac{x}{0,5} = 1/2/3$
$\frac{x}{0,5} = \frac{1}{2} *3$
$\frac{x}{0.5} = \frac{3}{2}$
x=$\frac{3*0,5}{2} = \frac{4,5}{2}$
x=2,25