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Methods of Solving an Equation

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Question

Question 46

Fill in the blanks to make the statement true.

If a number is increased by 20, it becomes 45. Then, the number is .................

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Solution

Let the number be x.
If it is increased by 20, it becomes (x+20).
So, the equation formed is x + 20 = 45
$\Rightarrow x = 45 - 20 \Rightarrow x = 25$
Hence, the number is 25.

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Methods of Solving an Equation

Standard VII Mathematics

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