Question

Determina valorile lui x,y si z x+y=122046; y+z=113130; x+z=15726

Answer 1

x + y      = 122 046

     y + z = 113 130

x     +   z =  15 726

____________________ →  adun relatiile

2 x + 2 y + 2 z =    250 902

2 ( x + y + z ) = 250 902

x + y + z = 250 902 : 2

x + y + z = 125 451 → suma celor trei numere

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125 451 - 113 130 = 12 321 ( x )

122 046 - 12 321 = 109 725 ( y )

113  130 - 109 725 = 3 405  ( z )