x + y = 20 \\ x - y = 12
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Answer:
x=16
y=4
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x + y + x - y = 12 +20
2x = 32
x= 32 / 2
x =16
x+ y =20
16 + y = 20
Y= 20- 16
Y = 4
2x = 32
x= 32 / 2
x =16
x+ y =20
16 + y = 20
Y= 20- 16
Y = 4
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