Name the inverse operation you can use to solve the equation(s)

x-8=12, n+3=13, b+14=33.

A) x - 8 = 12 . . . . . the operation is subtraction of 8. The inverse operation is addition of 8
.. x -8 +8 = 12 +8
.. x = 20

b) n +3 = 13 . . . . . the operation is addition of 3. The inverse operation is subtraction of 3.
.. n +3 -3 = 13 -3
.. n = 10

c) b +14 = 33 . . . . . the operation is addition of 14. The inverse operation is addition of the opposite of 14, which is -14. (See (b). This is the same as subtracting 14.)
.. b +14 +(-14) = 33 +(-14)
.. b = 19


Whenever you do any operation on one side of the equation, you must do the same operation on the other side. This is how the equality remains true.

The amount used= 13.04- 1.9 = 11.14