Write an algebraic expression for this - EASY!

Question

Write an algebraic expression for this...

"The difference of 7 and a number n."

Would it be... 7-n or n-7?

Also, is there a difference for the order of the numbers and why?

Answer 1

I believe it would be 7 - n because the word difference is right before 7 meaning it's the first in the equation.  If it was phrased "a number n and the difference of 7"  (impractical, yes, but) then it would still be asking the same thing because 7 is after the word difference

Answer 2

it's 7-n. for god sake are u in elementry school!

Answer 3

7-n

and yes there is a difference always with subtraction and division. think of it like this if you have 5-3 it would be 2. but if you switch it around and have 3-5 it would be -2. its the same with the variables

Answer 4

The answer would be 7-n in this case

IT does matter depending on what the variable equals.

For and example :

                          n = 4

                          7-4=3

                          4-7= -3

Hope this helps ! : )

Answer 5

it would be 7-n. it says the difference of SEVEN and a NUMBER. You want to take those two numbers and then subtract the second number from the first.

Answer 6

i think 7-n i always go with the first number mentioned first.

Answer 7

its    n - 7

i dont know why  its just algrebra rules

Answer 8

it would be 7-n. it says the difference of seven and a number... you want to take those two numbers and then subtract the second number from the first. hope this helps :)

Answer 9

|7-n|

OR

|n-7|

The lines around the 2 expressions mean absolute value so whatever

7-n or n-7 is, it will be expressed as a positive number

For example, if n=10

then |7-10|=|-3|=3

and |10-7|=|3|=3

so the difference would be 3

Answer 10

7-n and if it was so easy

why didnt you do it  

Answer 11

if it's easy you should know

Answer 12

if its so easy, why dont you do it?