anonymous
  • anonymous
2.Solve. 5 = –(–z + 3) A. –8 B. 8 C. –2 D. 2
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
im guessing this one is -2..
Goose.
  • Goose.
This one is a bit more tricky than your last one, with the (-z + 3) in parentheses... you must first distribute your - to each one inside, as it is basically -1 x -z and -1 x 3
anonymous
  • anonymous
or plug in the numbers...

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Goose.
  • Goose.
So that'll get you z - 3
Goose.
  • Goose.
Then just like last time, isolate your variable, add 3 to each side.
anonymous
  • anonymous
5=(-2+3)?
Goose.
  • Goose.
5 + 3 = z - 3 + 3
anonymous
  • anonymous
oh yeah
Goose.
  • Goose.
You know -3 + 3 is 0 so, z = 5 + 3
anonymous
  • anonymous
8?
Goose.
  • Goose.
Yes :)
Goose.
  • Goose.
And as she was saying, you can check your answer after solving by plugging it into your variable.
anonymous
  • anonymous
thanks
Goose.
  • Goose.
Glad to help! :)

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