Answer:
A, B, C, D
Explanation:
You want to know which of these equations have exactly one solution:
- -13x + 12 = 13x - 13
- 12x + 12 = 13x + 12
- -13x + 12 = 13x + 13
- 12x + 12 = 13x - 12
One solution
An equation in a single variable will have one solution if the variable terms on either side of the equal sign have different coefficients.
A: coefficients are -13 and +13; one solution (x=25/26)
B: coefficients are 12 and 13; one solution (x=0)
C: coefficients are -13 and +13; one solution (x=-1/26)
D: coefficients are 12 and 13; one solution (x=24)
All of the given equations have exactly one solution.