Question

3supra 5 ori x plus 12 egal x

Answer 1

$\frac{3}{5} \times + 12 = x \\ \frac{3}{5} \times 12 = \frac{3 \times 12}{5} = \frac{39}{5}$
$x = \frac{39}{5}$
$x = 7.8$