SOLUTION: Please if you can show me how to solve it too that would be appreciated! I want to understand how to work the problem out. 21-7t+3r-rt

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please if you can show me how to solve it too that would be appreciated! I want to understand how to work the problem out. 21-7t+3r-rt      Log On


   

Question 523816: Please if you can show me how to solve it too that would be appreciated! I want to understand how to work the problem out.
21-7t+3r-rt
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
21-7t+3r-rt
=7(3-t)+r(3-t)
=(7+r)(3-t)