1) (2,71 12,6) + (87,4 2,71)= 34,146 + 236,794= 270,94
2) (20,8 17,9) - (20,8 7,9)= 372,32 - 164,32= 208
1) (2,71 12,6) + (87,4 2,71)
= 34,146 + 236,794
= 270,94
2) (20,8 17,9) - (20,8 7,9)
= 372,32 - 164,32
= 208