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(2) 2x+3y=9,25
Despejamos y en (1)
Y=6-3x.
Remeplzamos en (2)
2x+3(6-3x)=9,25
2x+18-9x=9,25
-7x+18=9,25
-7x=9,25-18
X=-8,75/-7
X=1,25
Seguimos con y
2(1,25)+3y=9,25
2,5+3y=9,25
3y=9,25-2,5
Y=6,75/3
Y=2,25