Which best represents the number sentence shown?

Question

x−7=8

Answer 1

One possible representation of the number sentence is a balanced equation with a variable x on one side and a constant 15 on the other side:

x - 7 = 8
x = 8 + 7
x = 15

Another possible representation is a number line with a point at 15 and arrows pointing towards larger values of x:

<----|--------------●-----------------> x
7 15+

The left arrow indicates that x can be any value smaller than 15 by subtracting a positive number, such as 7. The right arrow indicates that x can be any value larger than 15 by adding a positive number, such as 1, 2, 3, etc.

Answer 2

The number sentence would be

7 less than a number x is 8.

Answer 3

The number sentence for the statement "7 less than a number x is 8" is:

x - 7 = 8

This can also be written as "a number x decreased by 7 is equal to 8".