Problem Solving. Perform the indicated operations. Use the back portion of this paper for your solutions. You may add more sheets if necessary 11.(-2) - 3/2 12.(-7/4) - 2% 13.2 + (-3/2) 17.(2 2/3)(-1/2) 14.(-1) + (-15/8) 18.(-1 2/3)(7/4) 15.4/3 -5 1/6 19.(6)(-4/3) 16.(-1PA)(-9/5) 20.(5)(-3/2)