SOLUTION: absolute value l -10-10a l < 60 (the l are the absolute value signs) I know the answer is a<5 and a>-7. I just don't know how to get that answer. Thank you!

Question 568278: absolute value l -10-10a l < 60 (the l are the absolute value signs) I know the answer is a<5 and a>-7. I just don't know how to get that answer.
Thank you!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
| -10-10a | < 60
----
-60 < -10-10a < 60
Add 10 along the line:
-50 < -10a < 70
---
Divide thru by -10.
Remember to reverse the inequality when you divide by a negative:
-7 < a < 5
=============================
Cheers,
Stan H.
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