If 7x - 12 = 13 - 5x - 5, then the value of x is

1. $\dfrac{3}{4}$

2. $\dfrac{5}{3}$

3. $\dfrac{6}{5}$

4. $\dfrac{7}{4}$

If 5(n - 3) = 4(n - 2), then the value of n is

1. 5
2. 6
3. 7
4. 8

If $2x + \dfrac{3}{5} = \dfrac{2}{5}x + 3$, then the value of x is

1. 1

2. $\dfrac{3}{2}$

3. 2

4. $\dfrac{5}{2}$

If $a - 3 = \dfrac{a}{2} + \dfrac{a}{3}$, then the value of $a$ is

1. 12
2. 15
3. 18
4. 24