How do you simplify #7( 3x - 3) - 12x < 3( 1+ 3x ) - 5#?

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1 Answer
Yan L.
Nov 11, 2017
  • distribute
  • add like terms

Explanation:

#7(3x - 3) - 12x < 3(1 + 3x) - 5#

distribution first to the pair of parentheses.

#21x - 21 - 12x < 3 + 9x - 5#

combine like terms

#color(red)(21x) - 21 color(red)(- 12x)# < #color(red)3 + 9x color(red)(-5)#

#9x - 21 < 9x -2#

#true#

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