Its: \(x+(x-3)=16\)
Start at the beginning
The sum of a number is \(x+\) and three less than the number is \((x-3)\)
Parentheses are mandatory; it is asking the number you get from \(x-3\)
Its asking for the sum so you would get \(x+(x-3)\)
In the very large dictionary of mathmatical terms, in this kind of problem, the word "is" means =.
The problem says "is sixteen"
So you would get \(x+(x-3)=16\)
