Question

nas figuras, a // b // c, calcule o valor de x.

Answer 1

1) 9/x=18/4 2) 10/15=(3x+1)/(5x-2) 3) (x-5)/(x+1)=6/24 4) 8/(2x-6)=12/(x+1)

x=(9*4)/18 10(5x-2)=15(3x+1) 24(x-5)=6(x+1) 8(x+1)=12(2x-6)

x=36/18 50x-20=45x+15 24x-120=6x+6 8x+8=24x-72

x=2 50x-45x=15+20 24x-6x=6+120 8x-24x=-72-8

5x=35 => x=35/5 18x=126 => x=126/18 -16x=-80

x=7 x=7 x=-80/-16 => x=5