Seudónimo Seudónimo
  • 03-02-2017
  • Mathematics
contestada

What's 3x + 10 - x + 12

Whats 3x 10 x 12 class=

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HOTBFAST
HOTBFAST HOTBFAST
  • 03-02-2017
2x+22 is the answer.
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Sansacrasial
Sansacrasial Sansacrasial
  • 03-02-2017
Correct! Your answer is B. 2x+22, here's why it is though: 
=3x+10+−x+12
=3x+10+−x+12 — Combine like terms:
=(3x+−x)+(10+12)
Answer:
=2x+22

Good luck with your studies, I hope this helps~!

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