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x+y=270 ;x+16=y sistem de ecuatii,ajutati-ma va rog,am nevoie urgent

Răspuns :


x+y=270

x+16=y

x+x+16=270

2x=254

x=127

y=127+16

y=143

Uite aici:
daca y=x+16 
inlocuim adica
x+x+16=270
2x=270-16
2x=254
x= 254:2
x= 127
y= 127+16
y= 143
Verificare:
127+143= 270