|5n - 2n|
The expression would be abs(4n - 3n) where (4n - 3n) could be simplified to 1n or n. When n is positive, the result is n when n is negative, the result is -n (which will be positive).
The difference of thirteen times a number and four.
Four times X plus 3 equals seven. 4X + 3 = 7 That!
The answer to the product of a and b divided by an expression that is 3 times their difference is 3ab(a+b).
I believe it would be 3-5x (x being the number multiplied by 5)
If x is used to represent the unknown number, then the expression for 20 times a number would be 20x.
X = 4(6-y)