Jubal wrote the four equations below. He examined them, without solving them, to determine which equation has no solution.
 7 x + 1 = 7 x+ 1. 3 x + 2 = 3 x minus 2. 4 x + 1 = 3 x + 8. negative 2 x minus 1 = negative 2 x minus 1.
 Which of Jubal’s equations has no solution?
 7 x + 1 = 7 x+ 1
 3 x + 2 = 3 x minus 2
 4 x + 1 = 3 x + 8
 negative 2 x minus 1 = negative 2 x minus 1