Question

Five times a number added to 10 is 20. What is the number

Determine the correct equation and the unknown number in this situation.

Answer 1

Let's denote the unknown number as \( x \).

According to the problem, five times this number added to 10 equals 20. We can write this as an equation:

\[
5x + 10 = 20
\]

Now, let's solve for \( x \).

1. Subtract 10 from both sides:
\[
5x + 10 - 10 = 20 - 10
\]
This simplifies to:
\[
5x = 10
\]

2. Now, divide both sides by 5:
\[
x = \frac{10}{5}
\]
This simplifies to:
\[
x = 2
\]

So, the unknown number is \( \mathbf{2} \).