Question

Calcule X e Y determinados nas transversais pelos feixes de paralelas a seguir: (URGENTE!)

Answer 1

c)
(x+2)/8=x/4
4(x+2)=8x
4x+8=8x
8x-4x=8
4x=8
x=8/4
x=2

Fica:
y/6=4/8
y/6=1/2
6=2y
y=6/2
y=3

d)
2/3=(2x+2):(5x-1)
3(2x+2)=2(5x-1)
6x+6=10x-2
3x+3=5x-1
5x-3x=3+1
2x=4
x=4/2
x=2

y/10,5=2/3
3y=2(10,5)
3y=21
y=21/3
y=7