50 algebraic formulas, for the first year of junior high school, troublesome, urgent

How much honey does 9 boxes of bees make in a year?

The analytical part of the question is very clear, and the calculation formula is also very clear:

I think you probably don't understand how this equation is listed, do you?

Because I know that the distance taken by the taxi is x kilometers, in this x kilometers, the first 3 kilometers have to pay 5 yuan, and the remaining (x-3) kilometers are paid according to each kilometer, then the total payment is payable.

5+ RMB. What's not to understand about this?

3y -2y+6=8 3y-2y=2 3y-y=1 3/2y -y+1=2

-x+1/x）²+1/x-3+x=-（x+1/x）²+1/x+x）-3=-9

(a+b) a-b=1 2 (a-b) (a+b) = 2,3(a-b) a+b minus 2(a+b) a-b = 5

abc = 1 a (ab + a + 1) = a (ab + a + abc) = 1 bc + b + 1 ab + a + bc + b + b + b = (b + 1) (bc + b + 1) in the same way ab + a + a + b + b + 1 b + c + 1 c = 1

2 + 2/3 = 2 times 2/3, 3 + 3/8 = 3 times 3/8, 4 + 4/15 = 4 times 4/15

n+n/(n²-1）=n*(n²-1）

a=99,b=10∴a+b=109

There are so many in Xinhua Bookstore, let's go and see it directly...

Solution: Original = -2 x 14 x y - 2 y

2（x ² y ²）14 x y

When x y with Zen calendar = 7 , x y = 2, the original Pei Sou = 2 7 - 14 2).

x=6/(a+1)

x is a natural number.

then a+1 is divisible by 6.

There are 4 solutions. a1=0 a2=1 a3=2 a4=5

6=1*6=2*3

So A+1 may be equal to 1, 6, 2 or 3

So the value of a is 0,5,1,2

1 or 5 or 0

Write the formula as x=6 (1+a).

x is a natural number, and it is enough to bring x into a natural number.

Because you are in the first year of junior high school, x=6 (1+a), x is a natural number, a didn't say, after x brings in a natural number, a seems to have an infinite number, haha, that's all, there are no other conditions, just an infinite number of solutions.