[brian2]

I really need hel its solving linear inequalities multi steps

[brian2]

8n+2-10n<20

[jaysie90]

Subtract 2 from both sides.
8n - 10n < 18

Combine 8n and -10n
-2n
-2n < 18

Divide both sides by -2

N < -9

Post me back if you have any problems or more questions.

[ArcSine]

Except remember that when dividing (or multiplying) both sides by a negative number, you reverse the sense of the inequality.

You can see, e.g. that n = -10 satisfies the proposed conclusion (n < -9) but doesn't satisfy the original inequality.