"Solution of linear equations of one variable" PPT courseware 2

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Qingdao Edition Seventh Grade Mathematics Volume 1	pptx	6 MB

"Solution of linear equations of one variable" PPT courseware 2

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Upload Time: 2024-10-04

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"Solution of linear equations of one variable" PPT courseware 2

Knowledge review

What is a linear equation of one variable?

Two properties of the equation:

1. If the same integer is added or subtracted from both sides of the equation, the result is still an equation.

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

Generally, after changing the sign of a term in an equation and moving it from one side of the equation to the other, this deformation is called transposition of terms.

Find mistakes with a keen eye

⑴ 6+x=8, shift the terms to get x =8+6

Wrong x=8-6

(2) 3x=8-2x, shift the terms to get 3x+2x=-8

Wrong 3x+2x=8

(3) 5x-2=3x+7, shift the terms to get 5x+3x=7+2

Wrong 5x－3x=7+2

When moving an item, you should pay attention to changing the sign of the item.

practise

1 Are the transformations of the following equations correct? If it is incorrect, how to correct it?

(1) Multiply both sides of the equation -x/2=1 by -2 to get x=-2

(2) Divide both sides of equation 3y=-2 by 3 to get x=-3/2

2 Solve the equation:

(1) -3y=-15

(2) 5-2x=9

(3) 1.5x+4.5=0

Ask students to review, what did you learn in this lesson?

After changing the sign of a term in an equation and moving it from one side of the equation to the other, this deformation is called a term shift.

Keywords: teaching courseware on solutions to linear equations of one variable, Qingdao edition seventh grade mathematics volume 1 PPT courseware download, seventh grade mathematics slide courseware download, solution of linear equations in one variable PPT courseware download, .PPT format;

For more information about the PPT courseware "Solution of a linear equation of one variable", please click on the "Solution of a linear equation of one variable" ppt tag.

"Solution of linear equations of one variable" PPT courseware:

"Solution of linear equations of one variable" PPT courseware Learning objectives (1) Through specific examples, summarize the transfer rule and realize the superiority of the transfer rule. (2) Clarify the basis of the transfer rule and the errors that may easily occur during the transfer process. (3) And can solve simple...

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Update Time: 2024-10-04

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"Solution of linear equations of one variable" PPT courseware 2