complete the following number sentences so that the answer to each is 1

What number sentences?

12/15-7/15+10/15=1

To complete the following number sentences so that the answer to each is 1, we need to find an appropriate number or operation to plug in.

1. __ - __ = 1
In this equation, we need to find two numbers whose difference is 1. One possible solution is 2 - 1 = 1.

2. __ ÷ __ = 1
For this equation, we need to find two numbers whose quotient is 1. One possible solution is 1 ÷ 1 = 1.

3. __ + __ - __ × __ = 1
In this equation, we have a combination of addition, subtraction, and multiplication. We can start with the multiplication operation. Since any number multiplied by 0 is 0, we can use that to our advantage. For example, 0 × 0 = 0. Next, we can add 1 to both sides of the equation to get 1 + 0 = 1. Finally, we can subtract 0 from both sides to get 1 = 1, which satisfies the equation.

4. __ × __ ÷ __ = 1
Here, we need to find two numbers whose product is 1 when divided by a third number. One possible solution is 1 × 1 ÷ 1 = 1.

5. __ + __ ÷ (__ - __) = 1
This equation involves addition, subtraction, and division. We can start by finding the difference inside the parentheses. For example, 2 - 1 = 1. Then, we can divide any number by 1 to get the same number. One possible solution would be 3 + 3 ÷ (1 - 1) = 1.

Remember that there might be multiple ways to complete these number sentences with an answer of 1. These are just a few examples to help you understand the process.