A) [tex] \frac{x - 6}{2} = x + 13[/tex] has one solution.
B) [tex]2 + 6x - 7 = 8 + 2x - 10 + 4x[/tex] has no solution.
C) [tex]3x + 5 = \frac{1}{5} (15x + 10)[/tex] has no solution.
D) [tex] \frac{1}{4} (16 + 8x) = 3x - 1 - x + 5[/tex] has infinite solutions.
Answer: [tex]\fbox {1. A} \\ \fbox {2. B} \\ \fbox {3. B} \\ \fbox {4. C}[/tex]
