Question

the difference between 3 times a number 7 is 5. write and solve an equation to determine the number. select the solution and graph that represents the number

Answer 1

3n - 7 = 5

n = 4

Explanation:

3n - 7 + 7 = 5

3n = 12

3n/3 = 12/3

n = 4

Answer 2

x = 4

Explanation:

Let's assume the unknown number to be x,

so three time the number would be 3x.

The difference between 3 times a number (3x) with 7 is 5, so we can write it as:

3x - 7 = 5

Now we can solve this equation to the find x (the unknown number).

3x = 5 + 7

3x = 12

x = 12/3

x = 4

Therefore 3x= 12

so 5 is the difference between the two numbers 12 and 7.