Resposta :
6x/-1 = x+4
multiplicando cruzado , temos :
6x = -x -4
6x+x = -4
7x = -4
x = -4 / 7
multiplicando cruzado , temos :
6x = -x -4
6x+x = -4
7x = -4
x = -4 / 7
3 ([tex] \frac{2}{-1} [/tex]) = x+4 <=>
<=> 3 ([tex]- \frac{2x}{1} [/tex]) = x+4 <=>
<=> 3 (-2x) = x+4 <=>
<=> -6x = x+4 <=>
<=> -6x -x=4 <=>
<=> -7x = 4 <=>
<=> 7x = - 4 <=>
<=> x = [tex] - \frac{4}{7} [/tex]
<=> 3 ([tex]- \frac{2x}{1} [/tex]) = x+4 <=>
<=> 3 (-2x) = x+4 <=>
<=> -6x = x+4 <=>
<=> -6x -x=4 <=>
<=> -7x = 4 <=>
<=> 7x = - 4 <=>
<=> x = [tex] - \frac{4}{7} [/tex]