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A number increased by 21 is 28. Find the number

7 years ago

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Arora
Let's take this number as 'x'.

Now, increasing a number by 21 means adding 21 to it.

So, the question tells us that:

x + 21 = 28

Subtract 21 from both sides:

x = 28 - 21
=> x = 7
7 years ago

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