Question

Sendo a// b// c// d, determine x, y e z.

Answer 1

Pelo Teorema de Thales, temos:
y/2=10/5
y/2=2
y=4

(x+y):x=(3+2):3
(x+4):x=5/3
3(x+4)=5x
3x+12=5x
5x-3x=12
2x=12
x=12/2
x=6

3/9=2/z
1/3=2/z
z=6