How do you simplify 5a - { 7a + 4[ a - 6( a + 4) + 5] \}?

1 Answer
Sep 21, 2017

18a+76

Explanation:

5a-{7a+4[a-6(a+4)+5]}

=5a-{7a+4[a-6a-24+5]}

=5a-{7a+4[-5a-24+5]}

=5a-{7a+4[-5a-19]}

=5a-{7a-20a-76}

=5a-{-13a-76}

=5a+13a+76

=18a+76