9+10 =21
prime numbers of 9= 3,3
prime numbers of 10=5,2
3x5=15
3x2=6
6+15=21
mugged you off
Haha no, cause if you had (3*3)+(5*2), you have to solve the paranteses before you do the addition, and you cannot switch places in twobdifferent paranteses :) BAM!
and 3*3+5*2=9+10=19
