5 points for math problems, 5 points for math problems 5 points for well answered .

x = 120.

Bought 120 toy rabbits.

and 7 are both divisors of 21.

Buy a total of n toy rabbits.

5 6 times n times the current turnover = multiplied by n + 24

n=120

Purchased x toy rabbits.

3x=x=120 Master Zhang bought 120 toy rabbits.

Solution: Set up Master Zhang to buy x toy rabbits. 5/6x×

x=120A: Master Zhang bought 120 toy rabbits.

That's the right answer, everybody's the same

Master Shezhang bought x toy rabbits.

Get x = 120 Master Zhang to buy 120 toy rabbits.

Master Zhang bought x toy rabbits, and there were:

The solution is x=120

That is, Master Zhang bought 120 toy rabbits.

Hope mine can help you!

Solution: hg=hb

The connecting AH square AEFG is the square ABCD around point A, which is obtained by rotating in the direction of the square of the square of the land needle in the same direction.

ag=ab，∠g=∠b=90°

In RT Agh and RT ABH.

ag=ab,ah=ah

rt△agh≌rt△abh（hl）

hg=hb (the corresponding sides of congruent triangles are equal).

Give me the original question, and shoot **.

1. Original formula = 8-2-9-9 = -12

An engineering team is divided into two groups to dig a tunnel from both ends to the middle, the first team of 19 people, a total of 3 days to dig a total of rice, the second team of 25 people, 3 days to dig a total of rice, according to this progress of a total length of 560 meters of tunnel, about a few days to complete?

For the purpose of the agricultural tools factory originally manufactured a farm tool with steel tons, after technological innovation to manufacture a farm tool can save steel tons, the original manufacture of 240 too farm tools of steel, how many units can be manufactured now?

A train travels 216 km in 4 hours and 30 minutes. After 9 hours of driving, we were still a kilometer away from our destination. How many kilometers is the full journey of this train?

Last year, a hosiery factory produced an average of 10,000 pairs of men's socks and 10,000 pairs of women's socks every month. The output of this year's 8 months is more than 10,000 pairs of the total output of the town's quiet year, and the average monthly output of socks in the 8 months of this year is how many 10,000 pairs?

Two cars, A and B, travel in the opposite direction from two places that are kilometers apart, and car B travels kilometers per hour, driving for 1 hour first, and then car A drives out in kilometers per hour; How many hours do you want to meet?

A lighting factory manufactures a batch of lamps and lanterns, plans to manufacture 260 pieces per day, and completes it in 30 days, but the result is actually 5 days less than planned, how many pieces are actually manufactured in the coal field?

It's not easy to calculate, you try it with vectors, and you should be able to calculate it in the end!!

Isn't there a formula for multiplying vector a by vector b? It should be possible to use that macro slag formula to sneak out

I'm sorry to take the town, I didn't help much...

What a difficult problem, the rotten world, uses the special value method (an indispensable method for mathematics in the high hunger sun) so that k and into are both 1

then (see figure), MN is the median line of ABC.

So (1 x) + (into y) = (1 1) + (1 1) = 2ok back to Kai Song answered.

1 pass minute and then move the denominator to the right x(x+1)-2(x-1) =(x-1)(x+1).

So x2-x+2=x2-1

x=32 Move 1 3x to the right.

3=3/(3x-1)

3x-1=1

Get x=2 3

Solution: x (x-1)-2 (x+1)=1

Multiply (x+1) (x-1) on both sides of the equation to obtain:

x(x+1)-2(x-1)=(x+1)(x-1)x^2+x-2x+2=x^2-1

x=3 is tested to be the root of the original equation, so the root of the original equation is x=3 and the original equation can be reduced to .

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

3x-1=1

x=2 3 is tested to be the root of the original equation, so the solution of the original equation is x=2 3