SOLUTION: I need help on this problem 21>15+2a

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Question 709117: I need help on this problem 21>15+2a
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

21%3E15%2B2a Start with the given inequality.


0%3E15%2B2a-21 Subtract 21 from both sides.


-2a%3E15-21 Subtract 2a from both sides.


-2a%3E-6 Combine like terms on the right side.


a%3C%28-6%29%2F%28-2%29 Divide both sides by -2 to isolate a. note: Remember, the inequality sign flips when we divide both sides by a negative number.


a%3C3 Reduce.


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Answer:

So the solution is a%3C3