Question

0,2x supra4=1 supra 5 aici e ceva cu proportiile pls am nev

Answer 1

0,2x×5=4×1=> 0,2x *5=4 |÷5=> 0,2x=0,8|÷0,2=> X=4

Answer 2

$\frac{0,2x}{4} = \frac{1}{5} => \frac{ \frac{2}{10}x }{4} = \frac{1}{5} => \frac{ \frac{x}{5} }{4} = \frac{1}{5} => \frac{x}{5}: \frac{1}{4} = \frac{1}{5} => \frac{x}{5} * \frac{4}{1} = \frac{1}{5} =>$$\frac{4x}{5} = \frac{1}{5} => 4x*5=5=> 20x=5 =>x=4$