Question

Which shows the equation and solution for this sentence? Sixteen is nine more than a number.

Answer 1

see explanation

Explanation:

let the number be n then 9 more than n is n + 9 and

n + 9 = 16 → is the equation

subtract 9 from both sides

n = 16 - 9 = 7 ← is the solution

Answer 2

16=9+x

x=7

Explanation:

Algebraic language springs from common language. It is possible to write with numbers and variables what we express with colloquial language.

In this case we can read: Sixteen is nine more than a number.

We can write literally what is indicated:

16

is (indicates equality)

nine more than a number : 9 + X

So, 16=9+x

Now, we have to clear the variable x find the solution

x=16-9

x=7