-16 - (-43) i got

-16 + (43) = 27

-156 - 98 i got
-156 + 98 = -254

-192 - 47 i got
-192 + -47 = -239

0 - (-51) i got
o + 51 = 51

-63 -89 i got
-63 + -89 = -152

-12 - (-21) i got
-12 + 21 = 9

92 - (-16) i got
92 + 16 = 108

72 - 15 i got
72 + -15 = 57

-86 - (-19) i got
-86 + 19 = -67

17 - (-46) i got
17 + 46 = 63

-78 - (-53) i got
-78 + 53 = -25

All are correct!

really thanks so much!

You're very welcome.

Good job on solving the subtraction problems! You correctly added the negative numbers to get the final answer.

To solve subtraction problems involving negative numbers, we can use the concept of addition. When subtracting a negative number, it is equivalent to adding the positive value of that number.

Let's go through one example to see how you arrived at the correct answer:

-16 - (-43):
To solve this, you replaced the subtraction of a negative number with addition: -16 - (-43) becomes -16 + 43.
Then, you added the numbers: -16 + 43 = 27.
So, the final answer is 27.

You applied the same approach to all the other problems and correctly added the negative numbers to get the correct answer. Well done!