63 and 21
42 and 42
three twenty-eights
four twenty-ones
six fourteens
seven twelves
twelve sevens
fourteen sixes
twenty-one fours
twenty-eight threes
forty-two twos
eighty-four ones
I suppose you could use -42 twice. -63 and -21
1764
The factor pairs of 84 are (84,1)(42,2)(28,3)(21,4)(14,6)(12,7) None of them add up to 17. If that was -84, you could use 21 and -4.
Yes, 6 is a factor of 84.
Since 6 is a factor of 84, it is automatically the GCF of 6 and 84.
GCD: 1 LCM: 1764
1680
42 x 42 = 1764 42 + 42 = 84
12 and 21
The sum of 622 and 84 is 706.
1764
I suppose you could use -42 twice. -63 and -21
1848
(1764, 1) (882, 2) (588, 3) (441, 4) (294, 6) (252, 7) (196, 9) (147, 12) (126, 14) (98, 18) (84, 21) (63, 28) (49, 36) (42, 42)
1848
42 and 42
The factor pairs of 84 are (84,1)(42,2)(28,3)(21,4)(14,6)(12,7) None of them add up to 17. If that was -84, you could use 21 and -4.