Question 141283: Solve using the addition and multiplication principles.
7 + 7x < 21
Can someone help with this please I am soooo baffled.
Answer by frizz2freak4me(2)   (Show Source):
You can put this solution on YOUR website! Hi so to do something like this you act like the< is a = sign. Then you work backwards. 7+7x=21
-7 -7
So the 7's cross each other out. So 7x=21, so now you divide 21 by 7, which gives you 3.
Hope this helped.
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