(80+20) -12=100-12=88
(100-10)-52=90-52=38
60-(41-8) =60-49=11
50-(24+20) =50-44=6
(70+30) -45=100-45=55
(80+20) -12=100-12=88
(100-10)-52=90-52=38
60-(41-8) =60-49=11
50-(24+20) =50-44=6
(70+30) -45=100-45=55