1) (+3) + (-2) a) (+1) b) (-1) c) (-5) d) (+5) 2) 0 - (+5) a) (+5) b) (-5) c) 0 d) 5 3) (-3) +(+3) a) (-6) b) (+6) c) 0 d) (+1) 4) (-5) + (-6) a) (-11) b) (+11) c) (-1) d) (+1) 5) 1/2 + 3/4 a) 4/6 b) 5/4 c) 4/4 d) 3/

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