Question

Folosind proporții derivate aflați numărul x din proporțiile a). 2x/5 = 8/20 b). X/2totul/6 = 1/3 c). X-2/2 = 3/5

Answer 1

Răspuns:

$a)2x*20=5*8= > 40x=40= > x=40:40= > x=1\\\\b) \frac{x}{2}*\frac{1}{6} = > \frac{x}{12} =\frac{1}{3} = > 3x=12= > x=12:3= > x=4\\\\c)\frac{10x}{10}- \frac{10}{10}=\frac{6}{10} = > 10x-10=6= > x=\frac{16}{10} =\frac{8}{5}$