Algebra
posted by Linda .
3x+8=20; 4
Basically that 4 is asking whether that is a possible solution to the problem. I tried to solve it and the two solutions I got were 28/3 and 4. So I got that 4 is not a solution but if someone could check for me and make sure I didn't mess up my signs that would be great. It just seems kinda funny that i got the right number but not the correct sign.

3x+8 = 20 > x = +4
3x  8 = 20 > x = 28/3
So I agree with you