-13 - (20-32) = -13 - (-12) = -13 + 12 = -1-4.5 - (7-9.5) = -4.5 - (-2.5) = -4.5 + 2.5 = -2-5/8 - (5/8 - 1) = -5/8 - (5/8 - 8/8) = -5/8 - (-3/8) = -5/8 + 3/8 = -2/8 = -1/4-18 - (9 - 5) = -18 - 4 = -22-0.25 - (3 - 2.25) = -0.25 - 0.75 = -1-2/9 - (1 - 8/9) = -2/9 - (9/9 - 8/9) = -2/9 - 1/9 = -3/9 = -1/3
-13 - (20-32) = -13 - (-12) = -13 + 12 = -1
-4.5 - (7-9.5) = -4.5 - (-2.5) = -4.5 + 2.5 = -2
-5/8 - (5/8 - 1) = -5/8 - (5/8 - 8/8) = -5/8 - (-3/8) = -5/8 + 3/8 = -2/8 = -1/4
-18 - (9 - 5) = -18 - 4 = -22
-0.25 - (3 - 2.25) = -0.25 - 0.75 = -1
-2/9 - (1 - 8/9) = -2/9 - (9/9 - 8/9) = -2/9 - 1/9 = -3/9 = -1/3