Answer:
4x + 9x = 52
x = 4
Step-by-step explanation:
Let the unknown number be x
Given: Four times of that number ( 4x ) added to 9 times of that number ( 9x )
equals to 52
4x + 9x = 52
13x = 52
x = 4
So, the number is 4.
If this is correct, please give me brainliest.