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Question 997502: 4a-3(a-(2a+1))
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! you want to simplify 4a-3(a-(2a+1))
start with 4a-3(a-(2a+1))
resolve the inner parentheses to get:
4a-3(a-(2a+1)) becomes:
4a - 3(a - 2a - 1) which becomes:
4a - 3(-a - 1)
resolve the parentheses to get:
4a + 3a + 3
combine like terms to get:
7a + 3
the final expression is equivalent to the original expression.
a quick way to see if you got it right is to give a random value to a and then evaluate the original expression and the final expression.
if they both give you the same answer, then you got it right.
i used a = 5 and got 38 from both expressions so i'm reasonably confident that i got it right.
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