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

Answer 1

x = number

Question means:

( x + 11 ) • 3 = 45

3 x + 33 = 45

Subtract 33 to both sides.

3 x = 12

x = 12 / 3

x= 4

Check result.

4 + 11 = 15

15 • 3 = 45