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1. Efectuează:
a) 24 - 24 : 2;
b) 33 – 27;
d) 36: 22 + 6 · 13;
e) 2 · (12 - 12:4);
g) (6 – 2 ) : (8 – 6 23 (2017 - 15 : 2017 – 12017;
c) 5.57.517 – 525;
f) 2 · [2 + 3 . (24 – 256:16));
h) 3. (5 +53: 52 – 43:42) +7.30