Tennis 7:6 (6), What's more, 6:6 for seven is even again?

Tennis 7:6 (6), What's more, 6:6 for seven is even again?

The score of the negative side is 8-6, and the score of the negative side is 6. If the score is 7-2, it will be 7-6 (2)

（）÷（）=6…… 1,（）÷（）=8…… What numbers should be filled in brackets

31 5 29 3

9 7 8 6 7 5 () what is the number in brackets? I want a reason

There are many solutions
one
9 7 8 6 7 5 (6) as a whole,
The difference is 212121
two
978, 987, third, get in the middle
786, 876, second, first
867 one, 876 three, get in the middle
675, 765, second, first
756, 765, third, get in the middle
three
97 one group, 9-7 = 2, the next group starts with 8
86 one group, 8-6 = 2, the next group starts with 7
75 one group, 7-5 = 2, the next group starts with 6
64 one group, 6-4 = 2, the next group starts with 5
four
One by one, one by one
nine thousand eight hundred and seventy-six
seven thousand six hundred and fifty-four
wait
So you should fill in 6 in brackets

What is the number in brackets: 5 / 6 + 24 () = 24 () + 24 () = 8 ()

5/6+1/24=10/24+11/24=7/8

Fill in the 10 numbers 0 to 9 in brackets (each number is used intelligently once) to make the equation hold () + () = () + () = () + () = () + () = () + ()

(0)+(9)=(1)+(8)=(2)+(7)=(3)+(6)=(4)+(5)

Put 0 ~ 9 numbers in brackets (each number is used once) to make the equation hold. () + () = () - () = () × () = () ()

3+6=9
8-7=1
4*5=20
Consider the location of 0 first

There are 52 chickens, 30 ducks and 18 geese. There are 60 geese less than ducks. How many geese are there?

60 ÷ (30% - 18%)
= 60 ÷ 12%
=500
A: there are 500 chickens, ducks and geese

There are 3200 chickens, ducks and geese in the farm. If one third of the chickens, one fourth of the ducks and one fifth of the geese are sold, there will be 2400 poultry left,
There are 3200 chickens, ducks and geese in the farm. If 1 / 3 of the chickens, 1 / 4 of the ducks and 1 / 5 of the geese are sold, 2400 are left; if 1 / 5 of the chickens, 1 / 4 of the ducks and 1 / 3 of the geese are sold, 2320 are left. How many ducks are left in the farm?
I know that the formula can solve the answer, but the simple way is that the answer prompt: two times a total of 3200 * 2-2400-2320 = 1680, respectively sell chicken, goose 1 / 3 + 1 / 5 = 8 / 15, duck 1 / 4 * 2 = 1 / 2, then the original duck (3200 * 8 / 15-1680) / (8 / 15-1 / 2) = 800?

3200 (total number of chickens, ducks and geese) * 8 / 15-1680 (total number of 8 / 15 chickens, 1 / 2 ducks and 8 / 15 geese)
=Total ducks * 8 / 15 - Total ducks * 1 / 2
=Total number of ducks * (8 / 15-1 / 2)
So just get rid of the following fractions
This method is really invincible

There are 145 chickens, ducks and geese, 1 / 3 of which is equal to 2 / 5 of which is equal to 4 / 7. How many chickens, ducks and geese are there?

Suppose there are x chickens, y ducks and Z geese
x /3 = y *2/5 = z*4/7
x:y:z = 12:10 :7
x+y+z=145
x=60
y=50
z=35

The following is a statistical chart of the number of chickens, ducks and geese raised in the farm. Chickens account for 50%, ducks 30%, and geese 30%. 2. 120 geese, how many chickens and ducks?

Geese account for 1-50% - 30% = 20%
Chicken 120 △ 20% × 50% = 300
120 △ 20% × 30% = 180 ducks