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31 Calculați: a [-25³:5+16 : (−2³)] : (−3²) + [24 : (-2)² − (−45) : (−7 +10)²] : (−11); b [(−27)*:(−9³)+(−15)²:(−5²)]:(−6)+[121ª :(−11ª³)–(−169)³:(−13)³]:(-7). 32 Calculați: a 1-51-1-252:1-125|+|-71-0-|-15+24ẞ:|-3||; b (-18 +20)²15-|-(7 - 11)³|² : |-144 : (−3²)|5 + |−12 + 15||-¹ : (−3¹). ​

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