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Question 85 (i) A triangle is made up of 2 red sticks and 1 blue stick. The length of a red stick is given by r and that of a blue stick is given by b. Using this information, write an expression for the total length of sticks in the pattern given below

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Question 85 (i)

A triangle is made up of 2 red sticks and 1 blue stick.

The length of a red stick is given by r and that of a blue stick is given by b. Using this information, write an expression for the total length of sticks in the pattern given below



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