Question

Numarul x din prepozitia x-8/x=5/7​

Answer 1

Salut! Am atasat rezolvarea :)

Answer 2

$\bf\dfrac{x - 8}{x} = \dfrac{5}{7}$

$\bf5x = 7 \cdot(x - 8)$

$\bf7x - 56 = 5x$

$\bf7x = 5x + 56$

$\bf7x - 5x = 56$

$\bf2x = 56 \: \: | \div 2$

$\boxed{\bf x = 28}$