What is the solution to the equation? a + 5 and two-thirds = 9 a + 5 and two-thirds = 9. a + 5 and two-thirds + 5 and two-thirds = 9 minus 5 and two-thirds. A = 3 and one-third. a + 5 and two-thirds = 9. a + 5 and two-thirds + 5 and two-thirds = 9 + 5 and two-thirds. A = 14 and two-thirds. a + 5 and two-thirds minus 5 and two-thirds = 9 + 5 and two-thirds. A = 14 and two-thirds. a + 5 and two-thirds minus 5 and two-thirds = 9 minus 5 and two-thirds. A = 3 and one-third.