SOLUTION: my question is: 9k + 6 =4k + 21, plz solve the equation and show the work? thanx

Algebra ->  Equations -> SOLUTION: my question is: 9k + 6 =4k + 21, plz solve the equation and show the work? thanx      Log On


   

Question 422935: my question is: 9k + 6 =4k + 21, plz solve the equation and show the work? thanx
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
9k + 6 =4k + 21
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5k = 15
k = 3
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Cheers,
Stan H.

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

9k+%2B+6+=4k+%2B+21....solve the equation for k

9k+%2B+6+=4k+%2B+21......move 4k to the left side and 6 to the right side
9k+%2B+6-6+-+4k+=+4k-4k+%2B+21-6.

9k+%2B+cross%286%29-cross%286%29+-+4k+=+cross%284k%29-cross%284k%29+%2B+21-6.
9k++-+4k+=++21-6.

5k+=+15.

k+=+15%2F5.
k+=+3.