Respuesta :

Cortes33

To solve for m;

39 = 3m -12

39+12 = 3m -12 + 12 (add 12 to both sides)

51 = 3m

51 ÷ 3 = m

17 =m

m =17

Hope that helps, let me know if you don't understand something :D
Flip the equation.
[tex]3m-12=39[/tex]
and add 12 to both sides.
[tex]3m-12+12=39+12[/tex]
[tex]3m=51[/tex]
Now divide both sides by 3.
[tex] \frac{3m}{3} [/tex][tex]= \frac{51}{3} [/tex]


Final answer: m=17