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Calculati: a) 25 + 18+76-20
b) 3.24 +246 +24
c) 9 18:9 +824.8
d) 90 3:3-412! 4 + 1 8e8-96: 6
e) 3-2. [49 -6 (135)]
f) [56:4+ (13-4-1312)]: 3+1​