Question

Determine o valor de x na proporção 1/3x=2/x+1

Answer 1

x+1= 2(3x)
x+1= 6x
1= 6x-x
5x=1
x=1/5

Answer 2

1/3x = 2/x+1  Multiplicando cruzado =

1*(x+1) = 3x*2
x+1 = 6x
1 = 6x - x
1 = 5x
x = 1/5