Question

the sum of 3 times a number and 9 is 39 find the number ???

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Answer 1

Solution :-

Let the number be = x

Now according to the question

$= > \bf{{3x + 9 = 39}}$

$\bf{{= > 3x = 39 - 9}}$

$\bf{{= > 3x = 30}}$

$\bf{{= > x = \frac{ \cancel{{30}}}{ \cancel3} }}$

$\bf{{= > x = 10}}=>x=10$

Hence the number is 10.

Hope you understand this answer mate :)

Answer 2

Solution :-

Let the number be = x

Now according to the question

= 3x + 9 = 39

= 3x = 39 - 9

= 3x = 30

= 30/3

= x = 10

Hence the number is 10.