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x=3y+1 (2)
Sustituyes (2) en (1)
2x-y=22
2(3y +1 ) - y = 22
6y + 2 - y = 22
5 y = 22 - 2
Y = 20/5
Y = 4
Reemplazas Y en (2)
x=3y+1
X = 3(4) + 1
X = 12+1
X = 13
x=131/10
y= 21/5