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1) (16/53 + 26/53) + 17/53 = 42/53 + 17/53 = 59/53 = 16/53;9 2) 73/83 - 49/83 - 19/83 = 24/83 - 19/83 = 5/83; 3) 24/59 - 17/59 + 35/59 = 7/59 + 35/59 = 42/59;
1) (16/53 + 26/53) + 17/53 = 42/53 + 17/53 = 59/53 = 16/53;9 2) 73/83 - 49/83 - 19/83 = 24/83 - 19/83 = 5/83; 3) 24/59 - 17/59 + 35/59 = 7/59 + 35/59 = 42/59;