и) - 4/5 + (-5/6) = -24/30 - 25/30 = -49/30
к) - 3 1/7 + (-1 3/14) = -3 - 1 - 1/7 - 3/14 = -4 - 1/7 - 3/14 = -4 - 2/14 - 3/14 = -4 - 5/14 = -4 5/14
л) - 1 2/5 + (-2,8) = -7/5 - 14/5 = -21/5
м) - 1 1/3 + (-2,25) = -4/3 - 9/4 = -16/12 - 27/12 = -43/12
и) - 4/5 + (-5/6) = -24/30 - 25/30 = -49/30
к) - 3 1/7 + (-1 3/14) = -3 - 1 - 1/7 - 3/14 = -4 - 1/7 - 3/14 = -4 - 2/14 - 3/14 = -4 - 5/14 = -4 5/14
л) - 1 2/5 + (-2,8) = -7/5 - 14/5 = -21/5
м) - 1 1/3 + (-2,25) = -4/3 - 9/4 = -16/12 - 27/12 = -43/12