Do wyrazenia 16-5y=x dodaj wyrazenie 2x=3y-18, a nastepnie oblicz wartosc liczbowa otrzymanej sumy dla x=1/3,y=-1/2
16-5y=x+2x=3y-18
16-5y=3x=3y-18
16-5*(-1/2)=3*1/3=3*(-1/2)-18
16-(-2 1/2)=1=(-1 1/2)-18
16+2 1/2=1=-19 1/2
18 1/2=1=19 1/2 /-18 1/2
1=1
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16-5y=x+2x=3y-18
16-5y=3x=3y-18
16-5*(-1/2)=3*1/3=3*(-1/2)-18
16-(-2 1/2)=1=(-1 1/2)-18
16+2 1/2=1=-19 1/2
18 1/2=1=19 1/2 /-18 1/2
1=1