## EmmaH Group Title someone please help me!! Find the GCF of the monomials: 18x2, 30x2y, and 54y 18 6 18xy 6xy one year ago one year ago

1. blondie16 Group Title

well it cant have an x or y because not all of them have x and y so now you just have to figure out the greatest number that goes into all 3 of the numbers

2. EmmaH Group Title

i mean i just dont understand itwhat it wants me to do?

3. blondie16 Group Title

find the biggest number that goes into all 3 of the numbers

4. EmmaH Group Title

80,30, ande 54?

5. blondie16 Group Title

yes

6. EmmaH Group Title

2

7. blondie16 Group Title

sorry it is 18* 30 and 54 and look at your answer choices. then try it

8. EmmaH Group Title

how do i find the biuggest number that goe sinto all of them?

9. blondie16 Group Title

take each number and divide it by 6, then if all of that works, try 18

10. satellite73 Group Title

$18=2\times 3^2, 30=2\times 3\times 5,54=2\times 3^3$ greatest common factor is $2\times 3=6$

11. blondie16 Group Title

or you could do it that way...

12. EmmaH Group Title

i got 18= 2,3,6,9 30= 2,3,5,6,10 54= 2,27 so is it 2?

13. blondie16 Group Title

@satellite73 is right. for 54 you didnt get all of the factors

14. EmmaH Group Title

i made a mistake the gfc is 6 right?

15. blondie16 Group Title

yes

16. EmmaH Group Title

17. blondie16 Group Title

yesh

18. EmmaH Group Title

thanks!