-10 + 21, 31, 11, 210, -11, 7, 12, -23 - 12, 35, 11, 2, -35, -11, 10, 78 - 33, 45, 35, 33, 12, 111, -45, -33 - 50, 83, -83, 17, -17, 12, 7, 12 - (-12), 0, 24, 144, -24, 88, 1, 75 - (-20), 55, 95, -55, -95, 16, 33, -15 + (-12), -27, 27, 3, -3, 0, 1, 33 - (-7), 26, 40, -40, 22, -26, 5, 85 + 7, 92, 78, -92, -78, 91, 93, 83 - (-5), 88, -88, 78, 86, 87, 95.

Adding/Subtracting

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