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a fost răspuns

Stiind ca (x+48)+(y+52)=200, determinati 200+y+x
Stiindca 5·x+7·y+30=230,determinati 1000+2·y+3·x+2·x+5·y
VA ROOOOG E URGEEEEEEEEENT

Răspuns :

x+y+101=200 | +99

x+y+200=299

5x+7y+30=230

5x+7y=200

1000+2y+3x+2x+5y=1000+7y+5x=1200

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