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0 votes
1.2k views
in Linear Equations by (56.3k points)

If 5 is subtracted from three times a number, the result is 16. Find the number.

1 Answer

+1 vote
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Best answer

Let the required number be x.

Then, given that 5 subtracted from 3 times x i.e. 3x – 5

⇒ 3x – 5 = 16

Adding 5 to both sides, we get

⇒ 3x – 5 + 5 = 16 + 5

⇒ 3x = 21

Dividing both sides by 3, we get

⇒ 3x/3 = 21/3

⇒ x = 7

Thus, the required number is x = 7.

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