Răspuns:
c) = 3^20:3^19+31+156-11-(15^24:3^23)•(1:5²²)
= 3+31+156-11-(15²⁴:3²³)•(1:5²²)
= 179-(15²⁴:3•5²²)
= 179-(15²:3)
= 179-(225:3)
= 179-75
= 104
EVERGREEN
