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Combining Like Terms Powerpoint

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Combining Like Terms Powerpoint Powered By Docstoc
					Combining Like Terms
    Only combine terms that are
         exactly the same!!
• What’s the “same” mean?
  – If numbers have a variable, then you can
    combine only ones that have the same
    variable
  – You can also combine numbers that have no
    variables
                 Examples
• Which numbers are the “same”?
  5x, 8y, 9z, 10, 12x, 14z, 7

  Same: 5x and 12x
  Same: 10 and 7
  Same: 9z and 14z
                Let’s try it!
 4x + 9x        -7y + 9y         -8y + (-4y)
   13x            2y               -12y

4x + 8y + 10x           5 + 8x + 7y + 10
  14x + 8 y               8x + 7y + 15
             Final Problems:
1.   4x + 5y – 2x + 3y
2.   5(x + y) + 2(x + y)
3.   3 + 5x – 4y + 2y – 8x
4.   (-13) + (-2y) + (-7) – 4y
5.    8(2x – 3y) + 4(y – 3x)

				
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posted:5/23/2013
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