Question 997502
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.