arleny1 arleny1
  • 11-01-2015
  • Mathematics
Answered

( this is sum by gcf )

15+81= __ (__+__)?
what is the gcf of 15 and 81



Answer :

konrad509
konrad509 konrad509
  • 11-01-2015
[tex]15+81=3\cdot5+3\cdot27=3(5+27)[/tex]
Answer Link
mariamikayla
mariamikayla mariamikayla
  • 11-01-2015
[tex]15+81=3(5+27) \to 3*32 =\boxed{96} \\\\ 15|3 \\ 5 \ |5 \\ 1 \\\\15=3*5 \\\\\\ 81|3 \\ 27|3 \\ 9 \ |3 \\ 3 \ |3 \\ 1 \\\\ 81=3^4 \\\\ G.C.F(15;81)=3[/tex]
Answer Link

Other Questions

What is the next fraction in this geometric sequence?1/6,1/9,2/27,4/81,...
What is the Cell Theory and why is it important?
Ideas for an essay in English what freedom means to me
What are the factors of 3x²+7x-20?
What can we learn from the ant and the grasshopper
Why do plants need sap
For masters on Algebra : Evaluating functions: w(n) = 4n+2;Find w(3n) Once solved could i get a brief explanation please? I got 2 different numbers for it.
What are the factors of 3x²+7x-20?
What are the factors of 3x²+7x-20?
The early eastern European Slavic civilization at Kiev adopted the Eastern Orthodox religion, the Cyrillic alphabet, and certain styles of art and architecture