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You can read the posting Sarin learns Symbol, Algebra and Equation in school (Math Concept) to understand the concept of Algebra.
Challenge yourself with the question before look out for the given solution‼!
Upper primary school mathematics question UPQ375
Sarin, Fatimah and Hairu share a box of stickers equally. There are n stickers in the packet. Fatimah gives 2 of her stickers to Hairu and gives 10 of her stickers to Sarin.
a. Express the number of stickers Fatimah has left in terms of n.
b. How many stickers did Hairu and Sarin have finally?
They have equal number of stickers initially
The initial model
Each of them has stickers initially = n/3
Total number of stickers give away by Fatimah = 2 + 10 = 12
The number of stickers Fatimah left with = (n/3 – 12)
The final model
The number of stickers each of them has stickers initially = n/3
The number of stickers Hairu and Sarin has finally = n/3 + n/3 + 12 = 2 (n/3 + 6)
Make a Check:
Total number of stickers = (n/3 – 12) + n/3 + n/3 + 12 = 3n/3 = n