а). |-8,3| + |-2,9| = -8,3 - 2,9 = -11,2;
б). |-5,75| - |2,38| = -5,75 - 2,38 = -8,13;
в). |5/9| - |-1/6| = 5/9 + 1/6 = 10/18 + 3/18 = (10 + 3)/18 = 13/18;
г). |-8,4| * |-1,5| = 12,6;
д). |-2,73| / |1,3| = -2,1;
е). |-1 1/7| / |4/7| = -8/7 * 7/4 = -8 * 7/ 7 *4 = -2;
а). |-8,3| + |-2,9| = -8,3 - 2,9 = -11,2;
б). |-5,75| - |2,38| = -5,75 - 2,38 = -8,13;
в). |5/9| - |-1/6| = 5/9 + 1/6 = 10/18 + 3/18 = (10 + 3)/18 = 13/18;
г). |-8,4| * |-1,5| = 12,6;
д). |-2,73| / |1,3| = -2,1;
е). |-1 1/7| / |4/7| = -8/7 * 7/4 = -8 * 7/ 7 *4 = -2;