kpk dan fpb dari 144,84,72

KPK
(144) 144/2=72/2=36/2=18/2=9/3=3
(84) 84/2=42/2=12/2=6/2=3
(72) 72/2=36/2=18/2=9/3=3
KPK 144=2⁴×3²
84=2⁴×3
72=2³×3²
KPK=2⁴×3²=144
FPB=2³×3=24