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Category | Format | Size |
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Beijing Normal University eighth grade first volume mathematics | pptx | 6 MB |
Description
"Who has more packages" PPT courseware on linear equations in two variables
Suppose the old ox carries x packages and the pony carries y packages.
The number of packages of the old cow is 2 more than that of the pony. What kind of equation can you get from this?
The number of packages for the old cow - the number of packages for the pony = 2
x-y=2
If the old cow takes a package from the pony's back, how many packages do they each have? What kind of equation can you get from this?
Lao Niu's package + 1 = (number of packages carried by the pony - 1) × 2
x+1=2(y-1)
Give it a try:
1. Please determine which of the following equations are linear equations of two variables and which are not? and explain the reasons.
(1)x+3y-9=0; (2) 3x2-2y+12=0;
(3)x +y=20; (4) 3x-1/y=1;
(5)3a-4b=7; (6)2x+10 =0;
A set of equations composed of two linear equations containing two unknowns is called a system of linear equations in two variables.
The same letter in each equation of the system of equations must represent the same quantity.
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For more information about the PPT courseware "Who has more packages in a system of linear equations of two variables", please click on the ppt label of Who has more packages in a system of linear equations in two variables.
"Who has more packages" System of linear equations in two variables PPT courseware 2:
"Who has more packages?" Binary linear equation set PPT courseware 2. In a certain Olympic mascot store, the price of a certain mascot highlighter is only 8 yuan each, and a certain mascot plush doll is 40 yuan each. Xiao Ming bought a total of 10 items of the above two items at the counter, spending a total of 240..
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Update Time: 2024-10-19
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