SOLUTION: 5(4[3(2 + x)]) - 5(-4[-3(2 - x)]) I need help simplifying this can someone help me its an polynomial equation i hate these

Question 868049: 5(4[3(2 + x)]) - 5(-4[-3(2 - x)]) I need help simplifying this can someone help me its an polynomial equation i hate these
Found 2 solutions by rothauserc, Fombitz:
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
() and [] always mean "do me first"
5(4[3(2 + x)]) - 5(-4[-3(2 - x)])
5(4(6+3x)) - 5(-4(-6+3x))
5(24+12x) - 5(24-12x)
120+60x -120+60x
120x

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Work from the inside out.

.
.
.

So then,

You could have also pulled out all the multipliers,

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