Question

X/2+x/4+x/2=4
Resolva equação

Answer 1

x/2 + x/4 + x/2 = 4         ( multiplico todos por 4)

4x/2 + 4x/4 + 4x/2 = 4.4 

2x + x + 2x = 16 

3x + 2x = 16 

5x = 16 

x = 16/5    ou    3,2                              ok 

Answer 2

$\mathtt{ \frac{x}{2} + \frac{x}{4} + \frac{x}{2} =4} \\ \\ \mathtt{Multiplique~por~4~para~eliminar~as ~fra\c{c}\~ao} \\ \\ \mathtt{ \frac{x}{2} + \frac{x}{4} + \frac{x}{2} =4 ~~~~~~~~~(\times4)} \\ \\ \mathtt{2x + x + 2x = 16} \\ \mathtt{5x = 16} \\ \\ \mathtt{x = \frac{16}{5}} \\ \\ \\ \boxed{\boxed{\mathtt{Resposta : \frac{16}{5}}}}$