# Question #a1fc0

##### 1 Answer

Oct 11, 2017

#### Explanation:

#"to simplify a fraction"#

#color(blue)"cancel"" any"color(blue)" common factors"#

#"on the numerator/denominator"#

#" 3 is a common factor to both 21 and 30"#

#rArr21/30#

#=cancel(21)^7/cancel(30)^(10)larrcolor(red)" cancelling"#

#=7/10larrcolor(red)" in simplest form"# A fraction is in simplest form when no other factor but 1 will divide into the numerator/denominator.