1. Give the opposite of each number.
a 3
b. -9
C. -5
d. 12.
2. Solve each of the following problems.
a. 9 + (-6) = ?
b.(-5) + 8 = ?
c. (-12) + (-6) = ?
d. 10 - (-8) = ?
e.(-4) - (+2) = ?
f.-9-(-5) = ?