Answer:
x=1
Step-by-step explanation:
When the argument of the absolute value is positive, the equation has no solutions. It is equivalent to -3 = -1.
So, the only solution is found where the argument of the absolute value is negative:
-(2x -3) = 2x -1
4 = 4x . . . . . . . . add 2x+1
1 = x . . . . . . . . . . divide by 4
His model is incorrect because 20 x 7 is not 14, it is 140. If he had 140 instead of 14, he would have been correct.
I haven't done division like that in a long time, so this is what I think it will look like. I didn't add other work (multiplying 4 with #'s) but you can if you have to
