Question

[tex]2 \frac{1}{2}x=4
[/tex]

$1 \frac{1}{3}x= \frac{7}{15}$

Answer 1

2,5x=4  ...  x = 4 : 2,5 = 40 : 25 = 1,6
4 / 3 * x = 7 / 15  ...   x= 7/15 : 4/3 = 7/15 * 3/4 =(3*7)/(15*4)=7 / (5*4)=7/20 ;