Answer:
1.

2.

3.

4.

5.

6.

Explanation:
1.

Subtract 4

Divide by 2.

----------------------------------------------------------------------
2.

Subtract 15

Divide by 3.

------------------------------------------------------------------------
From now on, I'll proceed to do the same.
3.


------------------------------------------------------------------------
4.


------------------------------------------------------------------------
5.


Multiply by the reciprocal of 2/3


--------------------------------------------------------------------------
6.


