Question

What is the algebraic expression for "the difference between seven times a number and three times that number"?

7 - 3x
7x - 3
7x - 3x

Answer 1

"seven times a number" =7x

"difference"= -

"three times a number" = 3x so

7x-3x

Answer 2

(C)7x-3x

Explanation:

The given algebraic expression is:

"The difference between seven times a number and three times that number"

Let the number be equal to =x, then according to the statement, we have

seven times a number=7x and three times that number=3x

The difference between seven times a number and three times that number=7x-3x

which is the required algebraic expression.

Hence, option C is correct.