Question

Which is the missing number?

Two equations are shown side by side. The first equation is 17 minus 8 equals blank. The second equation is 8 plus blank equals 17.

(1 point)
Responses

11

11

1

1

7

7

9

9

Answer 1

Let's solve the first equation:

1. **First Equation**: 17 - 8 = ?
- 17 - 8 = 9

So, the blank in the first equation is 9.

2. **Second Equation**: 8 + ? = 17
- To find the missing number, we can rearrange the equation: ? = 17 - 8
- 17 - 8 = 9

So, the blank in the second equation is also 9.

Thus, the missing number is **9**.