Question 3469
1) You distribute the 4 to the x-2. 
2) Add 9 to both sides. 
3) Subtract 3x from both sides. 


Work
4x-8=3x-7
4x-8-1+9=3x-7+9 
4x=3x+2
4x-3x=3x-3x+2 
x=2

4) Check 

4(2-2)-1=3(2)-7
4(0)-1=6-7 
0-1=6-7 
-1=-1