2.9x0.45+0.29x4.2+0.029x13=2.9x0.45+2.9x0.42+2.9x0.13=2.9x(0.45+0.42+0.13)=2.9x1=2.9
0.29*4.5+0.29*4.2+0.29*1.3=0.29*(4.5+4.2+1.3)=2.9
