Don t understand the math problem? Who s going to help me!!!!!!!

1. Calculate how much money is shared.

7 yuan liter = yuan.

Fuel money per kilometer = yuan 100km = yuan.

2. Calculate how many liters of oil per kilometer are used.

liter 100km = liter km

Then calculate the amount. 7 yuan.

There is actually only one equation, which is 7*

But different sequences can have different interpretations.

It took a total of 7* yuan to run 100 kilometers, an average of 7* yuan per kilometer.

4 100*7 runs 100 kilometers with an average of oil liters per kilometer, and each kilometer requires fuel dollars.

For the time being, I only think of these two, and there may be others.

The first solution:

7 yuan a liter, then the liter is 7 * yuan) 100 kilometers are used yuan, and each kilometer is yuan.

The second solution:

100 kilometers used liters of oil, that is, oil per kilometer: liters 7 yuan per liter of oil, that is, 7 * yuan per kilometer.

1/2+1/4=3/4

And so on. Original = (2 to the 9th power - 1) 2 to the 9th power.

Mathematical proportional summation formula 1-( of 9 times.

Prime Minister A1 = 1 2, Gong Ratio Q = 1 2, N = 9

According to the summation formula of the proportional series; s=(a1(1-q^n))/1-q=(1/2(1-(1/2)^9 ))/1-(1/2)=1-(1/2)^9

You write the question clearly, I don't understand.

-1+2*3*4*5 6+7+8-9=25, all of them were used this time, but == is it okay to subtract 1.

Do you start from the left to the right, or do you calculate multiplication and division first, and then add and subtract.

Do it.

There should be no single answer.

1.There are no parentheses.

2.Didn't move anything.

3.Addition, subtraction, multiplication, and division are all used.

Exactly fit, I think that's the answer.

There should be a lot of methods, not just a few I wrote, hehe, you can explore and explore.

Speechless......

It's too abstract.

10 (4 5-7 12) = 600 132, solution: If the plane can fly at most x kilometers, it needs to fly back.

x/1500+x/1200=6

x=4000

3. Return to boring solution: set the first skipping rope x yuan.

8*（32x+

x = so, per football: meta.

In the integrand, sin 2x is an even function, the denominator x 4+2x 2+1 is an even function, and the quotient of the two is also an even function. And x 3 is an odd function, and the product of the even function and the odd function is the odd function.

According to the odd function on the symmetric integral interval [-5,5] the definite integral is 0, and it is easy to obtain the desired definite integral value = 0

Move 24 to the left, i.e. 360 x-360

Both sides are multiplied by x at the same time.

It's really hard.

x = empty set approximately.

There's no solution, the equation doesn't hold.