7
The two numbers that add up to -3 and multiply to -28 are -7 and 4. This is because -7 + 4 equals -3, and -7 × 4 equals -28.
To add mixed numbers and whole numbers, you simply treat the mixed numbers like they are whole numbers (4 3/4) turns to (4), then add the regular whole number, say, 7, and then re-add the fraction. For example, if you were adding 4 3/4 and 7, you would change 4 3/4 to 4, add 7 to get 11, then add the 3/4 back in, to give you 11 3/4.
3, 4, 5
3+4+5+6
0&4, 1&3, 2&2
-1
To add mixed numbers and whole numbers, you simply treat the mixed numbers like they are whole numbers (4 3/4) turns to (4), then add the regular whole number, say, 7, and then re-add the fraction. For example, if you were adding 4 3/4 and 7, you would change 4 3/4 to 4, add 7 to get 11, then add the 3/4 back in, to give you 11 3/4.
3, 4, 5 and 6
3 and 4
3, 4, 5
3+4+5+6
0&4, 1&3, 2&2
3
-10
7
1+6 2+5 3+4
23