Kneel and beg. Solve the system of equations 2x 2y 1 6x 6y 1 Write the answer and its process

2x+2y=1 ①

6x-6y=1 ②

Multiply by 3 to get:

6x+6y=3, get: 12x=4

x=1 3 is given by y=(1-2x) 2=1 6so. x=1/3

y=1/6

Multiply the first equation by 3, and then add it with the second equation to get 12x=4, x=1 3, and then substitute the first equation to get y=1 6That's it.

From 2x 2y=1 we get 6x 6y=3

Then from the question 6x-6y=1

6x 6y 6x-6y=3 1

So 12x=4 x=1 3

From 2x 2y=1 we get y=1 6

In summary, x=1 3

y=1/6

2（x+y）=1 6（x-y）=1

x+y) = 1/2 x-y = 1/6

x+y) + (x-y) = 1/2 + 12/6 x = 2/3

x = one-third.

Question 1: x-3y=2(1)

2x+6y=5.(2)

From (1), x=3y+2

Substitution (2), get.

2(3y+2)+6y=5

There is no solution to this equation with the Lu Sui group!

The second stupid divination question: x-3y=2(1)

2x+6y=-4.(2)

From (1), x=3y+2

Substitution (2), get.

2(3y+2)+6y=-4

y is any number of the foci.

3x+2y=7 ①

6x-2y=-1 ②

9x=6x=2 Brother digs 3

Substitution for Jingyou y=

The solution of the system of equations is.

x=2/3y=

From 2 nuclear world 3x+5 6y=1, x=3 2-5 4y substituting x=3 2-5 4y into 1 3x+1 6y=-1, solving y=6 and substituting y=6 into x=3 2-5 4y, solving x=-6, so change the reed limb.

x=-6,y=6

2x+3y=6(a)

3x-2y=-2(b)

a)*2, 4x+6y=12(c).

b)*3, 9x-6y=-6(d).

c) + (d), to get 13x=6, x=6 13, to substitute x=6 13 into blind (a), to get 2*6 13+3y=6

y=22/13

The hidden object is x=6 13,y=22 and 13

y=2-2 3*x is a straight line, 10, because 2x+3y=1, so 3y=1-2x, then y must be odd;

and 2x+3y=6, so 3y=2(3-x), the source cong friend y must be even;

Therefore, there is no solution to meet the meaning of the hail locust. ,2,x=-1y1 What does it mean, I don't understand it! ,2,x=-6-3t

t is an integer) y=6+2t,1, if Zheng Zao's equation 2x+3y=1, there is a set of solutions as (x=-1y1), and the general solution of the equation 2x+3y=6 is .

x=-1,y=1

x-2y=5

So the loss is early x = 2y + 5

Replace the old car into the car airlift 2x+7y=-1

4y+10+7y=-1

11y=-11

So. y=-1

x=2y+5=3

①2x+2y=1，②6x—6y=1；

Simplification: x+y=1 2, x-y=1 6;

Reel + 2x=4 6=2 3 x=1 3;

Bring in : 1 3 + y = 1 2 y = 1 6 so: x = 1 3, y = 1 6.

Obtained from 2x 2y 1.

6x 6y 3 in one.

6x 6y 1 two-type.

It is obtained by adding one formula to two.

12x＝4x＝1/3

Substitute two formulas, get.

6x1/3－6y＝1

2－6y＝1

6y＝1－2

6y＝－1y＝1/6

1：2x-y=5...1

x-2y=1...2 equation du1*2 minus equation 2 to get.

zhidao4x-2y-x+2y=9, that is, 3x=9, x=3, y=2x-5=1

2: Ibid. version, multiply Equation 1 by Weight 2 and subtract Equation 2 to get 14x+6y+5x-6y=19,19x=19,x=1

3y=5-7x=-2,y=-2/3

(1) Transform x-2y=1 into a copy

get: x=1+2y and then substitute baix into 2x-y=5 to get y=1 and x=3

2) Multiply duzhi 7x+3y=5 by 2 on both sides to get 14x+6y=10-5x+6y=-9, subtract these two formulas to get 19x=19, i.e., x=1, and then take x=6y=10 to get y=-2 3

(1) Solution:

baiy=2x-5 —du> substitution x-2(2x-5)=1 —> solution to zhi:x=3,y=1

2) Solution: 7x+3y=5 on both sides of the DAO with the same special time*2 —>14x+6y=10 —> subtracted from -5x+6y=-9 to get 19x=19, i.e., x=1, y=-2 3