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|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.

  • Algebra -

    3x+8 = 20 --> x = +4

    -3x - 8 = 20 --> x = -28/3

    So I agree with you

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