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If x+y=2 and x-y=1 then:

User GDB
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1 Answer

4 votes
x + y = 2

x - y = 1

Adding the equations,

x + y + x - y = 2 + 1

2x = 3

x =
(3)/(2)

x + y = 2

y = 2 - x

y =
2 - (3)/(2) = (4-3)/(2) = (1)/(2)

User Spfursich
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