# How do you find the gcf of #18x + 15y#?

##### 1 Answer

Jun 29, 2018

#### Explanation:

#x" and "y" have no other common factors but 1"#

#"the factors of 18 and 15 are"#

#18to1,2,color(red)(3),6,9,18#

#15to1,color(red)(3),5,15#

#"the gcf being "color(red)(3)#

#"the gcf of "18x+15y" is therefore 3"#