Find the error and explain why:

1. 9x+2=x+5

9x+2=6

9x=4

x=4/9

2. 3 (x-4) + 5=12

3x+4+5=12

3x+9=12

3x=3

x=1

1) 9x + 2 = x + 5 - --> 9x + 2 = 6

subtracted X from one side but not the other

2) 3 (x-4) + 5 = 12 - --> 3x + 4 + 5 = 12

didn't distribute correctly: 3 (x-4)

multiplied the X by 3 but not the - 4