Which equation has a solution of -5?

3/5 a + 19 = 16

2a - b = 4

3a + 7 = 8

None of these

Let's check each equation by plugging in a = -5:

(3/5)a + 19 = 16

→ (3/5)(-5) + 19 = -3 + 19 = 16 → True

So, the equation (3/5)a + 19 = 16 has a solution of a = -5