"Solving linear equations of one variable" PPT courseware for linear equations of one variable 4

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"Solving linear equations of one variable" PPT courseware for linear equations of one variable 4

Are some of the following formulas equations? If it is an equation, what are its characteristics?

(1) 5x+6=9x (2) 3x+5

(3) 7+5× 3=22 (4) 4x+3y=2

An equation containing only one unknown and the degree of the unknown is called a linear equation of one variable.

Determine whether the following equations are linear equations of one variable. If so, mark “√” and if not, mark “x”.

(1) -x+3y=4 ( ) (2) x2-x=6 ( )

(3) -6m=0 ( ) (4) 2a +b =0( )

(5) χ-y=8 ( )

(6) 2y+1=5y ( )

Equality property 1

If the same number or the same expression containing letters is added or subtracted to both sides of an equation, the result is still an equation.

Equality property 2

If both sides of an equation are multiplied by the same number (or divided by the same non-zero number), the result is still an equation.

Expand your thinking

In the equation 12x=3x, if we eliminate the unknowns on both sides of the equation, we get 12=3. What is going on?

Summary:

1. The concept of linear equation of one variable

2. Two properties of the equation

3. Rules of item transfer

4. Steps to solve a linear equation of one variable

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"Solving linear equations of one variable" PPT courseware 2:

"Solving linear equations of one variable" PPT courseware 2 The ancient Greek mathematician Diophantus (around 250 BC) is known as the father of algebra. Very little is known about his life story, but in a book "Greek Poetry. .

"Solving linear equations of one variable" PPT courseware:

"Solving linear equations of one variable" PPT courseware, please judge. When Xiaogang was doing homework, he encountered the equation 2x=5x. He divided both sides of the equation by x at the same time, and he got 2=5! Where did he go wrong? What are the basic properties of the equation? Solve the equation: 5x-2=8 Solve...

"Solving linear equations of one variable" PPT courseware for linear equations of one variable 7:

"Solving linear equations of one variable" PPT courseware for linear equations of one variable 7 Determine whether the following expressions are equations? And explain the reasons (think about it, you must be able to do it!). 4+2=6 (2) 5x-13=5 (3) x-32 (4)x+1/2 (5)5x-13=5+x (6) 5x+13=5+y What is one yuan one...

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Update Time: 2024-10-19

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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