She examined them, without solving them, to determine which has exactly one solution. Which of aanya’s equations has exactly one solution? 6 x minus 8 = 4 (x minus 2) + 2 x 3 (x minus 1) + 2 x = 3 (x minus 1) + 2 7 x + 2 minus x = 6 (x + 2) 4 (x + 3) + x = 5 (x + 1) + 7.