If the absolute value of 3-2k of (K-2) x + 2K = 4 is a one variable linear equation of X, then k =? As soon as possible, as soon as possible

If the absolute value of 3-2k of (K-2) x + 2K = 4 is a one variable linear equation of X, then k =? As soon as possible, as soon as possible

With respect to the linear equation of one variable of X, then the degree of X is 1
So | 3-2k | = 1
3-2k=±1
So 2K = 3 ± 1
k=2,k=1
And the coefficient of X is not equal to 0
k-2≠0
So K ≠ 2
So k = 1

What's fifteen times thirty of seven and fourteen

Seven and fifteen fourths times thirty
=（7+15/14）x30
=7x30+(15/14)x30
=210 + 32 and 1 / 7
=242 1 / 7

Find the value of the algebraic formula: x square - 2xy-y square, where: x2 square - xy = 3, XY + y square = 4
Find the value of the algebraic formula: 12 (M + n) - (mn-n-m) + 3MN, M + n = 2, Mn = - 3
The side length of a square is xcm. If Macbeth increases ACM, what is the area and perimeter of the square?
In a TV factory, the original annual output is m units. After the technical transformation, the annual output can be increased by 5%. How many units is the current annual output?

X squared - 2xy-y squared
=x²-xy-(xy+y²)
=3-4
=-1
12（m+n）-（mn—n—m）+3mn
=12m+12n-mn+m+n+3mn
=13m+13n+2mn
=13(m+n)+2mn
=13×2+2(-3)
=26-6
=20

Class 6 (2) is going on a spring outing. Each bottle of milk of a certain brand costs 2 yuan. If you buy it in a shopping mall, you can get one free if you buy 5 bottles; if you buy it in B shopping mall, you can get 10% discount
There are 42 students in the class

6 / (5 + 1) = 1 (Group) 1 * 5 * 2 = 10 (yuan) B store: 6 * 2 * 90% = 10.8 (yuan) 10.8 yuan ＞ 10 yuan a store is cheap

If x > 0, Y > 0 and 2x + 8y = 1, then the minimum value of X + y is 0______ ．

∵ x ＞ 0, y ＞ 0 and satisfy 2x + 8y = 1, ∵ x + y = (x + y) (2x + 8y) = 10 + 22yx · 8xy = 18, if and only if y = 2x = 12, take the equal sign. The minimum value of ∵ x + y is 18. So the answer is: 18

How do you make hamburgers

Chop the meat, but not too fragile. Onion cut into onion rings. Bread in two.
According to the order place the lettuce, onion rings, salad dressing on the following bread,
Add black pepper, salt, meat chicken essence, egg white, cornflour (little), mix well. If a cow meat is in need of adding a few water
Pan heat, put a little oil (attention, with a small fire), meat pot, fry until two brown out of the pot. In just set the bread
Then cover with a layer of lettuce, salad dressing.

How to calculate 0.1 (x-1) / 0.2-x + 2 / 0.4 = 9
Write down the middle steps in detail (key points), and answer them according to the seven steps in the teaching book! I will consider adoption as the best!

0.1(x-1)/0.2-x+2/0.4=9
0.5x-0.5-x+5=9
Merge congeners - 0.5x = 4.5
Then x = - 9

A and B start from a and B, which are 60km apart, and drive in the same direction. B is in the front and a is in the back. Suppose that a travels more than B by XKM per hour, and then a overtakes B by YH
(1) The functional relation between Y and X is--------
(2) When x = 10, y = --; when x = --, y = 5

1、xy=60
y=60/x
2、x=10,y=6h
When x = 12km, y = 5

2003×2005-2002×2006

2003*2005=2004*2004-1
2002*2006=2004*2004-4
3 is the solution

The distance between AB and B is 490 km. The two trains of a and B start from ab at the same time and run in opposite directions. The train of a is 120 km per hour, and the train of B is 100 km per hour
How many hours is the distance between two cars 50 kilometers

The distance between two cars is 50 km in X hours, 490-120 * X-100 * x = 50220x = 440x = 2 hours