Write 9+7 as a sum of three numbers, two of which add to 10.
How about 3 + 7 + 6?
How about 7 +3 + 6 = 16 = 9 + 7
OR 5 + 5 + 6 = 16
OR 6 + 4 + 6 = 16
OR 2 + 8 + 6 = 16
OR 1 + 9 + 6 = 16
Ithink that those are right too.
To write 9+7 as a sum of three numbers, two of which add to 10, we can follow these steps:
Step 1: Choose one number that adds to 10 with another number.
Let's choose 3 as the first number. Since 3+7=10, we have one pair that adds up to 10.
Step 2: Subtract the first number from the total sum.
9+7=16. So, we subtract 3 from 16, which gives us 13.
Step 3: Find another pair of numbers that add up to the result obtained in step 2.
To find the second pair, we can use the fact that the total of all three numbers must be 16. So, we subtract 13 from 16, which gives us 3. Thus, the other pair is 3+10=13.
Step 4: Write the sum of the three numbers.
Now, let's assemble the three numbers: 3, 7, and 9. We have 3+7+9=19.
Therefore, 9+7 can be written as 3+7+9, where the first two numbers add up to 10.