Question

1) Devin solved the equation 12 + 5x - 7 = 13x - 4 - 8x. Here are his last two steps: 5 + 5x = 5x - 4 5 = - 4 1)) which statement is true about the equation? 1) The solution is x = -4. There is no solution because 5 = -4 is a false equation. There are infinitely many solutions because 5 = -4 is a false equation. The solution is (5, -4).

Answer 1

Solution

We have the following equation given:

12+5x -7= 13x -4-8x

We can do the following:

12-7 +4 = 13x -8x -5x

And if we simplify we got:

9= 0x

Then the best answer would be:

There is no solution because 5 = -4 is a false equation