Solve the equation Solution X 1 2X 1 3X 1 4X 1 5X 137

First, simplify the expression to get the brother orange grandson:

7 2+-x)+(10 2+-x)=4 2 Simplification of the expression in parentheses on the left gives :

14 - x + 20 - x = 8

Merge items of the same kind:

34 - 2x = 8

Shifting the equation yields:

2x = 8 - 34

Simplify to get: 2x = 26

Divide both sides of the envy chain equation by -2 at the same time to get :

x = 13

Therefore, the solution to the equation (7 2+-x)+(10 2+-x)=4 2 is x=13.

This is a simple one-dimensional Li Lifu and a rotten sub-equation, and the process of solving the equation is as follows:

The original equation becomes ( 7-x)= 7-7

7-x)=0

7-x=0x=√7

1）x=， x×=×x=；（2）x÷=，x÷×=x=；(3) x =, x =x=, x = x= Analysis: (1) According to the nature of the equation, both sides can be ridden by the same car; (2) According to the nature of the equation, both sides can be multiplied together; (3) According to the nature of the equation, the two sides can be multiplied Comments: When solving the equation, it should be based on the nature of the equation, that is, the two sides of the equation are added, subtracted, multiplied or divided by a certain number (except 0), and the two sides of the equation are still equal, and at the same time, pay attention to the alignment of "=" up and down

Simplification: 2x+5 x=2

The left and right are multiplied by x

2x^2-2x+5=0

Discriminant = 4-4*2*5=-36<0

Then, there is no solution to the original equation.

x-|2x+1|=+3

Or. x-|2x+1|=-3

When 2x+1>1.

That is, when x>0.

The price of the original state is x-2x-1=3 or x-2x-1=-3x=-4 or x=2

So. take x=2

When 2x+1>1.

That is, when x>0.

The original cover width is equivalent to x+2x+1=3 or x+2x+1=-3x=2 3 or x=-4 3

So the book is rotten. Take.

x=-4/3

So the final answer is x=2 or x=-4 3

7x=4(22-x)

7x=88-4x

7x+4x=88

11x=88

x=88÷11

x=8 is glad to answer for you, I wish you good luck in your studies! The 1990 team will answer your questions.

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