solve x+y=15 and x-y=27
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x + y = 15.......(1)
x - y = 27.........(2)
_______
2x = 42
=> x = 21.
putting the x = 21 in equation (1),
x + y = 15
=> y = -6
x + y = 15.......(1)
x - y = 27.........(2)
_______
2x = 42
=> x = 21.
putting the x = 21 in equation (1),
x + y = 15
=> y = -6
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