The second volume of the first grade of junior high school mathematics problem 2 of X + 5 is equal to 8 of X + 4

The second volume of the first grade of junior high school mathematics problem 2 of X + 5 is equal to 8 of X + 4

Take eight on both sides
4(x+5)=x+4
4x+20=x+4
3x=-16
x=-16/3