Question

Calcular o valor de x na proporção
X/6=x+3/15

Answer 1

$\frac{x}{6}=\frac{x+3}{15}\Leftrightarrow\text{}15x=6(x+3)=6x+18 \Leftrightarrow\text{}9x=18\Leftrightarrow\text{}x=2$

Answer 2

x/6=x+3/15

15x= 6x+18
9x=18
x= 18/9
x=2