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(-3 5/8 + 4,125)- [11 3/4 -(-4,25) = (-3,625 + 4,125)-[11,75+ 4,25] = 0,5 - 16 = -15,5
-6 2/3 +[ -10 +(-4 1/8)] = -6 2/3 +(-14 1/8)= - 6 16/24 - 14 3/24= - 20 19/24
[-13 2/5-(-18)]+[-14-(-16)]= [ -13 2/5 + 18] + [ -14+16] = 4 3/5 + 2 = 6 3/5