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Adding variables with same exponents

  • Thread starter rcmango
  • Start date
  • #1
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0

Homework Statement



solve.

.2y^3 + .6y^3 - .5y^3

I believe the answer to be .3y^3

Homework Equations





The Attempt at a Solution



i got the answer to be .8y^3 - .5y^3

= .3y^3

I think this is correct, I'm not sure, please let me know if I finished this correctly.
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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hi rcmango! :smile:
(try using the X2 button just above the Reply box :wink:)
.2y^3 + .6y^3 - .5y^3

I believe the answer to be .3y^3
yes, that's fine :smile:

.2y3 + .6y3 - .5y3

= (.2 + .6 - .5)y3 = .3y3 (distributive law)
 
  • #3
234
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Thanks.
 

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