X+Y=18 and X-Y=2 Then Find Vapue Of X And Y?
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x + y = 18 ------------- [ 1 ]
x - y = 2 ------------- [ 2 ]
.
[ 1 ] + [ 2 ] :
2x = 20
x = 10 ----------- Substitute into [ 2 ]
.
10 - y = 2
y = 10 - 2
y = 8
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Answer: x = 10 and y = 8
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