84 + 96 + 72 + 77 + 91 = 420
77
you say: 5x+7=84-6x 5x+6x+7=84-6x+6x 11x+7=84 11x+7-7=84-7 11x=77 x=77/11 x=7
The greatest common factor of 42, 77 and 84 is 7.
The GCF is 7.
7. 7x7=49. 7x11=77. 7x12=84.
The GCF is 7.
84 - 7 = 77
Their factors are: 77: 1, 7, 11, 77 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
GCF(84, 77, 49) = 7.
48+84+84=216
The total is 252