\( \begin{array}{ll}\text { 28. } & 6-(-7) \\ \text { 29. } & (-4)+8 \\ \text { 30. } & (-4)-11 \\ \text { 31. } & (-5)+8 \\ \text { 32. } & 2-(-2) \\ \text { 33. } & (-8)+9 \\ \text { 34. } & 0+(-10)\end{array} \)

Sure, let's solve each of the problems step by step: ### 28. \( 6 - (-7) \) - **Calculation:** Subtracting a negative number is the same as adding its positive counterpart. - **Solution:** \( 6 + 7 = 13 \) ### 29. \( (-4) + 8 \) - **Calculation:** Adding a positive number to a negative number. - **Solution:** \( 8 - 4 = 4 \) ### 30. \( (-4) - 11 \) - **Calculation:** Subtracting a positive number from a negative number. - **Solution:** \( -4 - 11 = -15 \) ### 31. \( (-5) + 8 \) - **Calculation:** Adding a positive number to a negative number. - **Solution:** \( 8 - 5 = 3 \) ### 32. \( 2 - (-2) \) - **Calculation:** Subtracting a negative number is the same as adding its positive counterpart. - **Solution:** \( 2 + 2 = 4 \) ### 33. \( (-8) + 9 \) - **Calculation:** Adding a positive number to a negative number. - **Solution:** \( 9 - 8 = 1 \) ### 34. \( 0 + (-10) \) - **Calculation:** Adding a negative number to zero. - **Solution:** \( -10 \) --- **Summary of Answers:** 28. \( 13 \) 29. \( 4 \) 30. \( -15 \) 31. \( 3 \) 32. \( 4 \) 33. \( 1 \) 34. \( -10 \)