Question

Seven more than a certain number is nin nine less than twice the number. find the number.​

Answer 1

The answer is:

n = 16

Work/explanation:

Let's call the number n.

Seven more than n = n + 7

Nine less than twice n = 2n - 9

Put the expressions together : n + 7 = 2n - 9

Now, we have an equation that we can solve for n.

First, flop the equation

2n - 9 = n + 7

Subtract n from each side

n - 9 = 7

Add 9 to each side

n = 16

Therefore, n = 16.

Answer 2

number is 16

Explanation:

let n be the number , then 7 more than the number is n + 7 and 9 less than twice the number is 2n - 9

equating the 2 expressions

2n - 9 = n + 7 ( subtract n from both sides )

n - 9 = 7 ( add 9 to both sides )

n = 16

the required number is 16