Question

Na proporçao x-1/2=6x+1/4 o valor de x que tona verdade essa relaçao e
b)determine o valor de x na proporçao 1/3 =x-1/x+1

C -5x+18/9 = -3x+1/2

Answer 1

x - 1/2 = 6 x + 1/4
2( 6 x + 1 ) = 4 (x - 1 )
12 x + 2 = 4 x - 4
12 x - 4 x = -4 - 2
8 x = -6
x = -6/8
x = -3/4
b)1/3 = x - 1 /x + 1
3 ( x - 1 ) = x + 1
3 x - 3 = x + 1
3 x - x = 1 + 3
2 x = 4
x = 4/2
x = 2
c)5 x + 18/9 = 3 x + 1/2
5 x - 3 x = 1/2 - 18/9
2 x = 1/2 - 2/1
2 x = 1/2 - 4/2
2 x = -3/2
x = -3/2 : 2
x = -3/2 . 1/2
x = -3/4