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Adding Triangular Numbers

Question 25t ...

Question

Question 2
5t – 3 = 3t – 5

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Solution

5t – 3 = 3t – 5
$\Rightarrow 5 t - 3 t = - 5 + 3$
$\Rightarrow 2 t = - 2$
$\Rightarrow t = \frac{- 2}{2} = - 1$
To Check:
$5 t - 3 = 3 t - 5 \Rightarrow 5 \times (- 1) - 3 = 3 \times (- 1) - 5$
$\Rightarrow - 5 - 3 = - 3 - 5 \Rightarrow - 8 = - 8$
$\Rightarrow L . H . S = R . H . S$
Hence, it is correct.

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Adding Triangular Numbers

Standard VIII Mathematics

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