Divide a 3-meter-long iron wire into 7 sections, each section is a fraction of the length of the wire, and each section is a fraction of the length of the wire

Divide a 3-meter-long iron wire into 7 sections, each section is a fraction of the length of the wire, and each section is a fraction of the length of the wire

1, one seventh

The part of a bamboo pole inserted into the mud is 45 meters, the part out of the water is 34 meters more than the part inserted into the mud, and the part immersed in the water is 38 meters less than their sum. How long is the bamboo pole?

45 + 34 + 45 + (45 + 34 + 45-38) = 4720 + 7940 = 41340 (m) a: the total length is 41340 M

The part of a bamboo pole inserted into the mud is 45 meters, the part out of the water is 34 meters more than the part inserted into the mud, and the part immersed in the water is 38 meters less than their sum. How long is the bamboo pole?

45 + 34 + 45 + (45 + 34 + 45-38) = 4720 + 7940 = 41340 (m) a: the total length is 41340 M

A bamboo pole is inserted into the water, and the mud part is about 0.4 meters long
The length of the part entering the mud is more than 0.1 meters, the length of the part in the water is less than 0.11 meters, and how many meters does the bamboo stick come out of the water?
We need to solve the equation

Let the length of the bamboo rod out of the water be X
0.4X3+0.1=3x-0.11
x=0.47
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A bamboo pole is inserted into the water. The length of the part in the water is three times that of the part in the mud, and the part in the water is less than three times that of the part out of the water
How many meters does the bamboo stick come out of the water
Solve by equation

0.44m
The length of the rod in water should be
one point two
The part outside the water is x long
2 = 12
The solution is x = 0.44

The part of a bamboo pole inserted into the mud is 45 meters, the part out of the water is 34 meters more than the part inserted into the mud, and the part immersed in the water is 38 meters less than their sum. How long is the bamboo pole?

45 + 34 + 45 + (45 + 34 + 45-38) = 4720 + 7940 = 41340 (m) a: the total length is 41340 M

A stick is 12 meters long. After intercepting 2 / 3 of the stick, another 2 / 3 of the stick is intercepted. How many meters are left?
Although I will do it, I'm just afraid of doing it wrong, so let's ask,

12×（1-2/3)-2/3
=4-2/3
=3 and 1 / 3

A stick is 5 meters long. If you cut 2 / 5 of it, how many meters are left? If you cut 2 / 5 of it, how many meters are left

Intercept 2 / 5, and there is 5x (1-2 / 5) = 3M left
Two fifths of a meter is cut off, leaving 5-2 / 5 = 4 and 3 / 5 meters
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A bamboo pole cuts off half of its length for the first time and the remaining third for the second time······
The third cut off the remaining quarter, the fourth cut off the remaining fifth, leaving a few parts of the total length

（1-1/2）x(1-1/3)x(1-1/4)x(1-1/5)
=(1/2）x(2/3）x(3/4)x(4/5)
=1/5
A: one fifth of the total length is left
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For the first time, a bamboo pole cuts off half of its total length for the first time and the remaining third for the second time
The third cut off the remaining quarter, the fourth cut off the remaining one-fifth, leaving a few parts of the total length
Urgent, had better have analytic!

（1-1/2）×（1-1/3）×（1-1/4）×（1-1/5）
=1/2×2/3×3/4×4/5
=1/5
One fifth of the total length is left