Question

Exercitiul 4.Multumesc

Answer 1

1/10*(4x-1)/2=21/20; 4x-1/20=21/20; 4x-1=(20*21)/20; 4x-1=21; 4x=21+1; x=22/4

Answer 2

$\frac{1}{10}(2x-\frac{1}{2})=\frac{21}{20}$
$2x-\frac{1}{2}=\frac{21*10}{20}$
$2x=\frac{21}{2}+\frac{1}{2}$
[tex]2x=\frac{22}{2} [/tex]
$x=5,5$