Which answer describes the solution to each equation?


Column A

1. 5x+7=1/2(10x+12) A. one solution
   
2. -1/9(18x27)=1+x-4-3x B. no solution
   
3. x+3/4=3/4x+3/4 C. an infinite number of solutions
   
4. 4+3x=2x-10