raport inseamna ,pentru doua numere a si b [tex] \frac{a}{b} [/tex]
iar 0,(3) = [tex] \frac{3}{9} [/tex]
a/b = 3/9 = 1/3
a-b = 12
a = 12 + b
b = 3a
a = 12 + 3a
a = -6
b = -6 * 3 = -18
la celalalt punct
a/b = 5/10 = 1/2
a+b = 75
a = 75 - b
b = 2a
a = 75 -2a
3a = 75
a = 25, b = 50
