There is a formula, the box on the left is all integers, and the answer on the right is only the approximate value of rounding: a few thirds + a few fifths + a few sevens ≈ 1.16

There is a formula, the box on the left is all integers, and the answer on the right is only the approximate value of rounding: a few thirds + a few fifths + a few sevens ≈ 1.16

Let the original numbers be x / 3, Y / 5 and Z / 7 respectively
(35X + 21Y + 15Z )/105 ≈ 1.16
35x + 21y + 15z ≈ 121.8 is an integer, take 122
X may be 1,2,3,
When x = 3, y and Z have no solution
When x = 2, y may be 1, 2, and Z has no solution
Follow this procedure to get x = 1, y = 2, z = 3
The original number is 1 / 3, 2 / 5, 3 / 7

The approximate value of a number obtained by rounding is 6.850, then the original number of this number is greater than or equal to (), less than ()

The approximate value of a number obtained by rounding is 6.850, then the original number of this number is greater than or equal to (6.8455) and less than (6.8504)

If the approximate value of a number obtained by rounding is 90, then the number is greater than or equal to () but less than ()

If the approximate value of a number obtained by rounding is 90, then the number is greater than or equal to (89.5) but less than (90.5)