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- >4.Simple equation. (Operating on both sides)
- /Ø3±≤4±x+2=8
- MYSZEK 2xy
- EXAMPLE
- e
- t101
- p12
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- v500
- zrm
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- k/m
- sgm
- c3m
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- k+m
- c2m
- k=m
- c8m
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- k*m
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- sDm
- c3
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- p10
- t0
- c3m
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- k=m
- c2m
- c4m
- ke
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- p10
- oxm
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- sU
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- k:m
- c3m
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- p8
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- cxm
- k=m
- c8m
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- kem
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- oxm
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- ke
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- p6
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- ze
- t102
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- t0
- zxm
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- e
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- BLURB
- 1`#We are going to solve`the simple equation:
- 1`#@/Ø3±≤4±x+2=8@
- 4`We open the &Equations& window.
- 6`#We write the problem in the window.
- 8`#To create a fraction we press the &"/"& button,
- 8`#and use the &up& and &down& arrows to get
- 8`#to the numerator and denominator.
- 10`#It is very useful to read the texts
- 10`#which appear below the title of the window.
- 12`After formulating the problem we press &ENTER&.
- 14`#The program solves the problem but the final result is ¬ given&.
- 14`#"We must find it ourselves!"
- 16`We reduce numbers between the sides of the equation.
- 18`We press &ENTER& to check the solution.
- 20`#Now we can multiply both sides by the number "$4"$.
- 20`#To do this we go to the previous step
- 20`#(we click in the upper part of the window) ...
- 22`we press the &Operate on both sides& button
- 22`(The mouse is pointing at the button) ...
- 24` write $"*4$" ...
- 26`#and come back to the working part of the window
- 26`#(we click in the lower part of the window).
- 28`We know that
- 28`#"$6*4=24"$
- 28`#@/Ø3±≤4±x*4=3x@
- 28`We can edit the expression or type "$3x=24"$.
- 29`#"We press &ENTER&"
- 29`#to check if we have operated on both sides correctly.
- 30`#Now we divide both sides by the number "$3"$.
- 30`#To do this we go to the previous step, using the mouse, ...
- 32` write $":3$" ...
- 34`and return to the working part of the window, using the mouse.
- 36`#Now we just type &x=8&.
- 38`#This result can be accepted as the final answer.
- 38`#We press "&ENTER&"
- 38`#&without making any changes& in the expression.
- ;38`#"We press the &Answer& button."
- 40`#When you work with 2xy you "do not have to" inform
- 40`#the program that you are going to operate on both sides.
- 42`#The program keeps all the steps of our calculations in memory.
- 42`#We can note them down or print them out.
- 43`We press &ENTER& again.
-
- 101`#We show how to use 2xy.
- 101``#"The presentation proceeds automatically."
- 101``#To move yellow panels use the mouse.
- 101`#Press ENTER on the KEYBOARD to continue.
-
- 102`#In a moment the &Examples& window will appear.
- 102`You can watch the same presentation again, or
- 102`#load the next example, or
- 102`#close the window and solve your own problem.
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