Question

x/3 = 7
(es fraccion)
2/5x= 4
(es fraccion)

ayuda por fis

Answer 1

$\frac{x}{3} = 7\\\\x = 7(3)\\\\x = 21\\\\\\\frac{2}{5x } = 4\\\\\frac{2}{5(4) } = x\\\\\frac{2}{20} =x \\\\\frac{1}{10} = x$

Eternamente axllxa