Answer:
Step-by-step explanation:
The mistake was: he is suppose to substract 1/2x from both side not add 1/2x
3/4x + 5 = 1/2(x - 8)
3/4x + 5 = 1/2x - 4
Substracting 1/2x from both side
3/4x - 1/2x + 5 = 1/2x - 1/2x - 4
3/4x - 1/2x + 5 = -4
3/4x - 1/2x = -4 - 5
3/4x - 1/2x = -9
Multiple each term by 4
3x - 2x = 4(-9)
x = -36
