"Oh! This is Cross-Multiplication....!!"

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Rupesh Gesota

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Jun 23, 2018, 9:36:49 AM6/23/18
to Rupesh Gesota
I had given them enough time to struggle and figure out how to evaluate 'x' from such equations, where variable is in the denominator: 


But when I found that they were unable to do this for long, I decided to intervene. In the above problem, it's easy to visualize that 2x-1 has to be 3, so that we get quotient as 3, and for this 2x should be 4 and hence x=2.

But I was aware that this game would not be always so easy. For ex., what if it is -

It's not so easy to solve this problem using the approach above (Why?)

So the objective was to accomplish a general strategy. Meanwhile, I was also aware that they are very comfortable with equations having variable in the numerator. 

So this is how it went:

How do you solve:  x/4 = 2 


To read further, how did they eventually figured out to solve this problem, check this link:

Will be glad to share your views about this post... you can also do so in the Comments section of the blog....

Also, If you find the post useful, plz feel free to share it with other teachers and parents in your group....

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Thanks and Regards

Rupesh Gesota   Maths Educator, Program MENTOR
Mobile: +91 9594 02 03 04
Email: rupesh...@gmail.com
Website: www.supportmentor.weebly.com
Blog: www.rupeshgesota.blogspot.com
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