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4-6.

Simplify the expressions below. 

  1. Draw 8 pluses. Then draw 13 minuses. Remove 4 minuses. Then 8 of the Plus - Minus combinations are 0. Thus only 1 minus remains.

  2. A number line from 0 to 12 in 1 unit increments with 3 jumps as follows: From 0, jump 4 units to the right, jump 7 more units to the right, jump 2 more units to the left.

  3. If you start at , move to left , right , and left , where do you end up?