(i) For which values of a and b does the following pair of linear equations have an infinite number of solutions?
`2x+3y=7`
`(a- b)x+(a+b)y=3a+b- 2`
(ii) For which value of k will the following pair of linear equations have no solution?
`3x + y = 1`
`(2k – 1) x + (k – 1) y = 2k + 1`

Explanation

To solve the given problem, we will break it down into two parts as stated in the question.

### Part (i): Finding values of a and b for infinite solutions

1. **Identify the equations**:
The first equation is:
\[
2x + 3y = 7 \quad \text{(Equation 1)}
...