Answer:
Elena said this is true because the equation 12x+24x+18=36x+24-6 is an infinite solution . If she were to do the equation any further it would end up as each side being equal .
Explanation:
if she kept doing it:
12x+28=36x(equation now 36x+18)
24-6=18(equation now 36x+18)
so it would be 36x+18=36x+18 which is an infinite solution because each side equals the other one .