Post a New Question


posted by .

If the answer is 1-2/3m what is the question>

How can you solve equations like these?

9r + 7 = 4r - 8

Need to get the r on one side.
1st- subtract 4r from the right side of the = sign. What you do to one side do to the other. 9r-4r+7=4r-4r-8. 5r+7=-8
2nd- subtract 7 from the left side to get r's by themselves. 5r+7-7=-8-7....5r=-15.
Divide 5r by 5.....remeber do it to both sides......5r/5=-15/5......r=-3
check answer.

Thanks for your help. I'm completely lost. Can you explain how 9r+7 = 4r-8?

  • math -


  • math -


  • math -

    what is rule for input value of n?

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question