Let the number be x and so the expression is: 4x -7
7
5A-2
5x-3
3n-30
4
7
5A-2
5x-3
To write 7 less than 2 times a number, you would first multiply the number by 2. This gives you 2x. Then, you would subtract 7 from the result of 2 times the number: 2x - 7. This expression represents the value of 7 less than 2 times a number.
5x-4
==> [ 3x - 8 ]
It is N - 55.
5n < 65
3n-30
To express "5 less than 3 times a number b," you start by representing "3 times a number b" as (3b). Then, to indicate "5 less than" this quantity, you subtract 5 from it. The final expression is (3b - 5).
4
4n-5 (Which is four times a number minus 5)