Respuesta:
x+y=166
x-y=74
x-74=y
x+x-74=166
2x=166+74
x=240:2
x=120
120-74=y
46=y
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Respuesta:
x+y=166
x-y=74
x-74=y
x+x-74=166
2x=166+74
x=240:2
x=120
120-74=y
46=y