Let Statements

okay, we need to take another look at Let Statements.
first of all they are statements, they have WORDS
Let x = the number
Let x = the first number
Let x = the smallest number
Let 20 - x = the other number
Let d = the number of dimes

Let x = the first number, Let x + 1 = the second number and Let x + 2 = the third number.

Words

and second of all there is no way x = x + 1 can possibly be a true statement.
subtract x from both sides and you get 0 = 1

so, use words and don't write totally false statements