Question

Aflați x din proporția
5,(5)/x=2,2(3)/6,7

Answer 1

Răspuns:

$\frac{5,(5)}{x} =\frac{2,2(3)}{6,7} \\5,(5)=\frac{55-5}{9} =\frac{50}{9} \\2,2(3)=\frac{223-22}{90} =\frac{201}{90} \\6,7=\frac{67}{10} \\\frac{201}{90} *x=\frac{50}{9} *\frac{67}{10} \\\frac{201x}{90} =\frac{3350}{90} \\201x*90=3350*90\\x=301500:201\\x=1500$