Substitute 18 for a and -13 for b on the right side of the equation. Substitute 18 for A and - 13 for B on the right side of the equation. Simplify the expression on the left side of the equation to . the equation simplifies to . This means that the equation is true for number(s). Therefor, the equation has solution(s).

1st blank choices: (6x-1),(6x-7), (18x-13), (18x-15)

2nd blank choices: (-13=-13), (-15=-13), (x=0.5), (x=1)

3rd blank choices: one, all, no

4th blank choices: no, one, infinitely many