Question

Determine o valor de x sabendo que r//s//t

Answer 1

A) 4/8=6/x
4x=8.6
4x=48
x=48/4
x=12

B) 2x+2/8 = 4x-12/12
12(2x+2)=8(4x-12)
24x+24=32x-96
24x-32x= -96-24
-8x= -120 (-1)
8x= 120
x=120/8
x=15

C) x/8 = 3/6
6x= 3.8
6x=24
x=24/6
x=4

D) 2x+2/5x-1 = 4/7
7(2x+2) = 4(5x-1)
14x+14=20x-4
14x-20x= -4-14
-6x= -18 (-1)
6x=18
x=18/6
x=3