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A1=28
A2=29
A3=30
%m1=92,23%
%m2=4,67%
%m3=3,10%
Szukane:
mat=?
mat=A1*%m1+A2*%m2+A3*%m3/100%
Obliczenia:
mat=28*92,23%+29*4,67%+30*3,1%/100%
mat=2582,44+135,43%+93%/100%
mat=28,11u