There is some ambiguity in the statement, which really requires parentheses to indicate which operation should be done first. So, four less than (y times 6) is written as 6y - 4, but (four less than y) times 6 is written as 6(y - 4). These quantities are quite different. For example, suppose that y = 5. Then, 6y - 4 works out to be 30 - 4 = 26. In comparison, 6(y - 4) = 6(5 - 4) = 6(1) = 6.
6a-4
3x-4
An algebraic expression for "six less than 2 times y" can be written as (2y - 6). This expression reflects that you first multiply (y) by 2 and then subtract 6 from the result.
7r-6
They are two terms of an algebraic expression.
6a-4
4x - 5
3x-4
a - 4
Let the number be x and so the expression is: 5x-4
An algebraic expression for "six less than 2 times y" can be written as (2y - 6). This expression reflects that you first multiply (y) by 2 and then subtract 6 from the result.
The algebraic expression is: 15x-12
What is the algebraic expression for 5 less than a certain number
3l - 5 is an expression for five less than three times the length l
3n-9
It is: 6x-5
5x - 4