How many solutions does the following equation have?

9z - 6 + 7z = 16z - 6

Hello there!

9z - 6 +7z = 16z - 6
16z - 6 = 16z - 6
Subtract 16z from both sides
16z - 6 - 16z = 16z - 6 - 16z
-6 = -6
Now, add 6 to both sides
-6 + 6 = -6 + 6
0 = 0
Thus,
All real numbers are solutions.

B. 16is the absolute value

Ibelieve the answer would be b.