How I write two subtraction equations to show how to find 15-7
maybe
15 - 7 = 15+3 - 7 - 3 = 18 - 10 = 8
or
15 -5 - 7+5 = 10 - 2 = 8
15 - (3 + 4) = 8.
(3*5) - 7 = 8.
15 - 3 - 4 = 8.
To write two subtraction equations to show how to find 15 - 7, you can use the following steps:
Step 1: Start with the original subtraction equation:
15 - 7
Step 2: The first subtraction equation involves subtracting 7 from 15, which gives you the answer:
15 - 7 = 8
Step 3: The second subtraction equation involves starting with the answer and adding the subtracted value to get the original number back:
8 + 7 = 15
So, the two subtraction equations to show how to find 15 - 7 are:
15 - 7 = 8
8 + 7 = 15
To create two subtraction equations to show how to find the difference between 15 and 7, you can use the "take away" or "missing value" approach. Here are two possible equations:
1. Take Away Approach:
- Equation 1: 15 - 7 = 8
- This equation shows that when you subtract 7 from 15, the result is 8. It represents the direct calculation method, where you subtract the subtrahend (7) from the minuend (15) to find the difference.
2. Missing Value Approach:
- Equation 2: 7 + __ = 15
- This equation represents the inverse operation to subtraction, which is addition. In this case, you're asking, "What number should be added to 7 to get 15?" So, the blank space represents the missing value, which in this case is 8. Therefore, the equation can be rewritten as 7 + 8 = 15.
Both equations demonstrate the calculation of 15 - 7, but they provide different perspectives on the subtraction process.