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Question 75

9 added to twice a number gives 13. Find the number.
 


Solution

Let the required number be x.
It is given that 9 added to twice this number gives 13.
2x+9=132x=139      [transposing 9 to RHS]2x=42x2=42      [dividing both sides by 2]x=2
Hence, the required number is 2.


Mathematics
NCERT Exemplar
Standard VII

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