I. Elena began to solve this equation: 12x + 6(4x + 3)
= 2(6x +4-2)
3
12x + 6(4x + 3) = 3(2(6x + 4) - 2)
12x + 6(4x + 2) = 6(6x + 4) - 6
12x + 24x + 18 = 36x + 24 - 6
When she got to the last line, she stopped and said the equation is true for all values of x (infinite solutions).
low could Elena tell?
A. The variable terms and constant terms are different
B. The variable terms are the same, but the constant terms are different
C. The variable terms are different, but the constant terms are the same
D. The variable terms and constant terms are the same