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

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Answer 1 · 2017-09-21T22:44:25

#18a+76#

#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#