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Calculaţi: a) (-4)73: 2144-2512: 523
. c) ((-2)²+ [(-2)2195: [(-2)94]2}: 8;
e) {(-5)74: [(-5) (-5)70]} {[-5+(-5) -(-2)10: (+4)³-53-33]: (26:4-15³).
b) [(-3)2-(-3)87: (-3)83]: 5;
d) 52 + [(-2)7.25 (-3)]: 19 (-4)-5]; 102]: 103}; ​