answersLogoWhite

0


Best Answer

-x + 9 - 2x = -21

combine like terms -x and -2x

isolate -3x by subtracting 9 from both sides

divide both sides by -3

-3x + 9 = -21

- 9 - 9

-3x = -30

x = 10

User Avatar

Wiki User

15y ago

Still curious? Ask our experts.

Chat with our AI personalities

ReneRene
Change my mind. I dare you.
Chat with Rene
JordanJordan
Looking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan
RossRoss
Every question is just a happy little opportunity.
Chat with Ross

Add your answer:

Earn +20 pts
Q: How do you solve -x plus 9-2x equals -21?
Write your answer...
Submit
Still have questions?
magnify glass
imp