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Stiind ca x+y+z=8, calculati:
8x+8y+8z si x•13+y•13+c•13+21


Stiind Ca Xyz8 Calculati 8x8y8z Si X13y13c1321 class=

Răspuns :

8x+8y+8z=8(x+y+z)=8x8=64
13x+13y+13z+21=13(x+y+z)+21=13x8+21=125
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