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✦ Class 8 · Maths
Linear Equations in One Variable
Your friend says: think of a number, double it, add 5, and tell me the answer. You say 17 — and she says your number was 6. How did she know?
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What this lesson covers
Step by step, in this order.
- 1That balance gives us the one rule of this whole chapter. Whatever you do to one side, do exactly the same to the other.
- 2Now we do one together. I am not solving this one — you are. I will just ask what comes next.
- 3You have the method now.
- 4This one has brackets. The trick is that brackets are just a group waiting to be shared out.
- 5Same shape, different numbers.
- 6One habit worth building. Always check. Put forty back into the words. Sanju forty, Rohit fifty-five, total ninety-five.
How it looks
A real board, not a video.
This board is from a different Maths lesson — yours will look like this. She writes and draws while she explains, and stops to check you followed.
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