Question

Resuelve
..........x100=6,34
23,38 - ...........= 21,3
345,2 : ...........=0,3452

Answer 1

¡Hola!

I.
$x \times 100 = 6.34 \\ x = \frac{6.34}{100} \\ x = 0.0634$

II.
$23.38 - x = 21.3 \\ 23.38 - 21.3 = x \\ 2.08 = x$

III.
$\frac{345.2}{x} = 0.3452 \\ \frac{345.2}{0.3452} = x \\ \frac{ \frac{3452}{10} }{ \frac{3452}{10000} } = x \\ \frac{3452 \times 10000}{3452 \times 10} = x \\ \frac{34520000}{34520} = x \\ 1000 = x$
Espero que te sirva de ayuda y si tienes alguna duda puedes preguntarme ^^

— Margareth —