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Simplify the ...

Question

Simplify the following by using suitable arrangement(or property):
$9870 \times 561 - 9870 \times 461$

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Solution

We have,

$9870 \times 561 - 9870 \times 461$

$= 9870 (561 - 461)$

$= 9870 \times 100$

$= 987000$

Hence, this is the answer.

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