Question

VA ROG ESTE URGENT aflati x din proportia 3/x=12/5

Answer 1

$\frac{a}{b} =\frac{c}{d} => ad=bc$

$\frac{3}{x} =\frac{12}{5} => 12x=5*3$

$12x=15$

$x=\frac{15}{12} = \frac{5}{4}$

$x=\frac{5}{4}$