anonymous
  • anonymous
Simplify the following expression: 2x − 2y + 5z − 2x − y + 3z
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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CoconutJJ
  • CoconutJJ
Combine Like Terms: 2x-2x-2y-y+5z+3z
CoconutJJ
  • CoconutJJ
Can you do it now?
anonymous
  • anonymous
So basically what you're saying is do such like put together (02x-2x)(-2y-y)(+5z+3z)?

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CoconutJJ
  • CoconutJJ
Yes...
CoconutJJ
  • CoconutJJ
now what is 2x -2x
anonymous
  • anonymous
4x
CoconutJJ
  • CoconutJJ
umm. (2 x A Number)-(2 x The Same Number) = ?
anonymous
  • anonymous
Sorry, I'm relearning all of this as I go along, bad lifestyle and such, never went to class ,but taking math classes online to try and learn it all again. So, 2x-2x=1x correct
anonymous
  • anonymous
Or just x
CoconutJJ
  • CoconutJJ
no... let x=3 2(3) - 2(3) = ?
anonymous
  • anonymous
Erm, I've honestly no clue. Because when I see the subraction symbol, I would think you're subtracting it, and if they're the same numbers, it'd be 0.
CoconutJJ
  • CoconutJJ
YESSSS !!! FINALLLYY ITS ZERRRO !
CoconutJJ
  • CoconutJJ
NOW ... What is -2y-y
anonymous
  • anonymous
I want to say -1y..
CoconutJJ
  • CoconutJJ
no.... if you owe me 2 dollars and you borrow another 1 dollar. Do you owe me 1 dollar in total now ?
anonymous
  • anonymous
Ahhh, -3
CoconutJJ
  • CoconutJJ
yess. so -2y-y = -3y. You understand?
anonymous
  • anonymous
So far actually yes
CoconutJJ
  • CoconutJJ
Now.. What is 5z+3z. Use the same analogy
anonymous
  • anonymous
8z
anonymous
  • anonymous
x − 3y + 8z?
CoconutJJ
  • CoconutJJ
WHAT HAPPENED TO ZERO !
anonymous
  • anonymous
0x− 3y + 8z ?
CoconutJJ
  • CoconutJJ
Yes, but 0 times any number is always zero thus 0x = 0 --> 0-3y+8z --> -3y+8z
anonymous
  • anonymous
Ohhhhhhhhhhhhhhhhhh.... Shoot, I get it now!
anonymous
  • anonymous
Well awesome, Thanks Coconut!
CoconutJJ
  • CoconutJJ
YOU WELCOME

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