Question

Resolvendo a seguinte equacao 3/x + 6/3x= 1/5 (x e diferente de 0)Obteremos?A) s= {10}. B) s={15}. C) s={20} d) s={25}. E) s= {25}

Answer 1

3/x + 6/3x = 1/5
3/x + 2/x = 1/5
5/x = 1/5
x = 15.
Portanto S = {15}

Answer 2

Se 3/x+6/3x=1/5

entao 3/x+2/x=1/5

5/x=1/5

Multiplicano cruzado ficaria

x=25

x={25}