Answer:
C: 06 + x = 9
Explanation:
You'd definitely write that as x + 6 = 9.
Why? Well, think about it. You have the variable x, and it claims that six MORE (signifying addition) than the variable x is nine. Meaning, x + 6 is equivalent to 9; x + 6 = 9.
In the form the answers have it, x + 6 = 9 is the exaxt same thing as 06 + x = 9.