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The numbers that can go into both 84 and 100 are the common factors of both numbers. To find the common factors, you need to determine the factors of each number. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100. Therefore, the numbers that can go into both 84 and 100 are 1, 2, and 4.
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!
84
Itself and any of its factors
The hcf is 21