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 Highest Common Factor (HCF) of 21, 77, and 84 is 7. To find the HCF, you need to identify the common factors of the numbers and determine the highest one they all share. In this case, the factors of 21 are 1, 3, 7, 21; the factors of 77 are 1, 7, 11, 77; and the factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. The highest common factor among them 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
To get this answer, you will need to divide both answers by 5 first, because that is the obvious number that will go into both. 385/5= 77 420/5=84 So the new fraction is 77/84. 7 will go into both (it goes into 70, and 70 plus 14(another multiple of 7!) = 84) 77/7=11 84/7=12 385/420 in its simplest form is 11/12!