Question

O Valor de x que e soluçao da equaçao x+2\4+3x= 5(x-2) e 

Answer 1

 

 

x + 2\4 + 3x = 5(x - 2)

 

4x + 1/2 = 5x - 10

 

4x - 5x = - 10 - 1/2

 

- x = - 21/2

 

x = 21/2

Answer 2

Temos que:

 

$\text{x}+\dfrac{2}{4}+3\text{x}=5\cdot(\text{x}-2)$

 

$\text{x}+\dfrac{1}{2}+3\text{x}=5\text{x}-10$

 

Donde, segue:

 

$2\text{x}+1+6\text{x}=10\text{x}-20$

 

$10\text{x}-2\text{x}-6\text{x}=20+1$

 

$2\text{x}=21$

 

$\text{x}=\dfrac{21}{2}$

 

$\text{S}=\{\dfrac{21}{2}\}$