Question

calculati media aritmetica a nr.
a)=9×81×3:27×9:3-9×3
b)=(45×36+64×45):15-(27×80+80+73):(2×5)
VA ROG AJUTATIMA DAU COROANA

Answer 1

a=9•81•9:27•9:3-9•3
729•9:27•9:3-9•3
6561:27•9:3-9•3
243•9:3-9•3
2187:3-9•3
729-9•3
720•3=2160=a
sper ca te-am putut ajuta