9514 1404 393
Answer:
A
Step-by-step explanation:
We can eliminate parentheses, collect terms, and subtract the right-side expression from both sides to put these equations in general form. Then it is very easy to tell how many solutions there are .
A. -5x -10 = -5x -10
0 = 0 . . . . . true for all values of x; infinite solutions
B. 5x -4 = 5x -20
16 = 0 . . . . . not true for any value of x; no solutions
C. 5x +35 = -5x +35
10x = 0 . . . . . true for x=0; one solution
D. 5x +2 = 5x -2
4 = 0 . . . . . not true for any value of x; no solutions
