If 9 is added to 1/3 of a number, the result is 15. What is the number?
The phrase a number means an arbitrary variable, let's call it x:
x
1/3 of a number means we multiply x by 1/3:
x/3
9 is added to 1/3 of a number:
x/3 + 9
The phrase the result is means an equation. so we set x/3 + 9 equal to 15
x/3 + 9 = 15
To solve this equation for x, we type it in our search engine and we get:
x = 18
The phrase a number means an arbitrary variable, let's call it x:
x
1/3 of a number means we multiply x by 1/3:
x/3
9 is added to 1/3 of a number:
x/3 + 9
The phrase the result is means an equation. so we set x/3 + 9 equal to 15
x/3 + 9 = 15
To solve this equation for x, we type it in our search engine and we get:
x = 18