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Ladydiamond
a fost răspuns

daca x+y=8si y+2z=35, calculati
a) 5x+13y+16z
b) 3y-2x+10z
c) 7x +10y+6z
d) 4X(2z+y)+3x+3y

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Răspuns :

Alitta
a) 5x+5y+8y+16z=5(x+y)+8(y+2z)=5*8+8*35=8*40=320;
b) -2x -2y+5y+10z=-2*8+5*35=-16+175147;
c) 7x+7y+3y+6z=7*8+3*35=56+105=161;
d) 4*35+3*8=140+24=164;

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