Question

Cacule o valor de x ​

Answer 1

Resposta:

7. x=6

8. x=7

9. x=7

10. y=13,8

Explicação passo a passo:

7.    $\frac{2}{4} =\frac{3}{x}-->2x=12-->x+\frac{12}{2}=6$

8.   $\frac{4}{12}= \frac{x}{21}-->12x=84-->x=\frac{84}{12}=7$

9.   $\frac{6}{x}=\frac{12}{14}-->12x=84-->x=\frac{84}{12}=7$

10.  $\frac{6}{2}=\frac{4}{x}-->6x=8-->x=\frac{8}{6}=1,3\\\\\frac{2}{y} =\frac{1,3}{9}-->1,3y=18-->x=\frac{18}{1,3}=13,8$