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---------------- - --------------=
V3-V7 V12-V28
2(11V3-4V7)-13V7-V3
---------------------------------------=
2(V3-V7)
22V3-8V7-13V7-V3
------------------------------=
2(V3-V7)
21V3-21V7
----------------=
2(V3-V7)
21(V3-V7) 21
=------------------=----------- =10 1/2=10,5
2 (V3-V7) 2
p28=p4*7=2p7
11p3-4p7/p3-p7-13p7+p3/2p3-2p7=11p3-4p7/p3-p7-13p7+p3/2(p3-p7)=
2(11p3-4p7)/2(p3-p7)-13p7+p3/2(p3-p7)=22p3-8p7-13p7-p3/2(p3-p7)=9p3-9p7/2(p3-p7)=9/2