berapa fpb 42 dan 63? tolong pakai cara yah,,terimakasih

42
/\
2 21
..../\
...3 7

63
/\
3 21
.../\
..3 7

42 = 2 × 3 × 7
63 = 3² × 7
FPB = 3 × 7 = 21

mapel : matematika

42 = 2 × 3 × 7
63 = 3^2 × 7

FPB
= 3 × 7
= 21