a) -1 3/5 + (-1,4) = - 1,6 - 1,4 = - 3 b) 3,5 + ( -1/4 ) = 3,5 - 0,25 = 3,25 c) -7 - 2 1/7 = - 9 1/7 d) -3 3/5 -(-1 2/3) = - 3 9/15 + 1 10/15 = - 54/15 + 25/15 = - 29/15 = - 1 14/15
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a) -1 3/5 + (-1,4) = - 1,6 - 1,4 = - 3
b) 3,5 + ( -1/4 ) = 3,5 - 0,25 = 3,25
c) -7 - 2 1/7 = - 9 1/7
d) -3 3/5 -(-1 2/3) = - 3 9/15 + 1 10/15 = - 54/15 + 25/15 = - 29/15 = - 1 14/15