3x+8 = 20 --> x = +4
-3x - 8 = 20 --> x = -28/3
So I agree with you
|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.
1 answer
0 answers