Question

The product of 3 and a number is 39

Answer 1

13

Explanation:

the product of 3 and a number

that means 3*something

we can call something "x"

so we have

3*x = 3x

is 39

That means that something is equal to 39

let me write it

something = 39

but we know that this something is 3x

so we have

`3x=39\\\\(1)/(3)*3x=(1)/(3)*39\\\\x=(39)/(3) \\\\x=(3*13)/(3) \\\\x=13`

so the number is 13

Answer 2

Algebraic expression ; 3x = 39

Explanation:

Let the unknown number be x

`3* x = 39\\\\3x = 39`

Further solving

`\mathrm{Divide\:both\:sides\:by\:}3\\\\(3x)/(3)=(39)/(3)\\\\Simplify\\\\x =13`