How do you evaluate #\frac { 3( 6) } { 9} - \frac { 3} { 12}#?
1 Answer
Nov 22, 2017
Explanation:
#"simplify the numerator of the fraction on the left"#
#"note that "3(6)=3xx6=18#
#rArr18/9-3/12#
#=2/1-3/12#
#"to subtract change 2 into denominator of 12"#
#(2xx12)/(1xx12)-3/12#
#=24/12-3/12#
#"subtract the numerators leaving the denominator"#
#=(24-3)/12=21/12#
#"simplify by "color(blue)"cancelling by 3"#
#21/12=cancel(21)^7/cancel(12)^4=7/4larrcolor(red)"in simplest form"#
