Question

Calcule o valor da seguinte proporcao: x/ x+140=3/5

Answer 1

Olá!!



$\frac{x}{x+140} = \frac{3}{5} \\ \\ 3 (x+140 ) = 5x \\ \\ 3x+420 = 5x \\ \\ 3x-5x = -420 \\ \\ -2x = -420 \\ 2x = 420 \\ x=420/2 \\ x =210$