when a certain number is added to 11 and the result is multiplied by 3, the final result is 45. Find the number.

3(x+11)=45

3x+33=45
3x=45-33
3x=12
X=4

(11+×)(3)=45

(11+x)(3)=45

5x+1/2=11

x_3x=33_12

To find the number that, when added to 11 and then multiplied by 3, gives a final result of 45, we can solve this problem using algebra.

Let's denote the unknown number as "x".
Given that when x is added to 11 and then multiplied by 3, the final result is 45, we can write the equation as:

3*(11 + x) = 45

Now, let's solve for x:

First, distribute the multiplication over the parentheses:

33 + 3x = 45

Next, subtract 33 from both sides of the equation:

3x = 45 - 33

Simplify:

3x = 12

Finally, divide both sides of the equation by 3 to isolate x:

x = 12 / 3

Simplify:

x = 4

Therefore, the number we are looking for is 4.