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x +y = 180
y = 2x-60 // uno e s 60 grados menor que el doble del otro
x + y = 180
x + 2x -60 = 180
3x = 240
x = 80
Y = 2x-60
y = 2*80-60
y = 100
Rta: Los ángulos son 100° y 80°