If x+y=15 and x-y =7 tjen xy=
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1
x+y=15. (1)
x-y=7. (2)
so add. eqn 1 and. 2
2x=22
so, x=11
substitute x=11 in eqn 1
so x+y =15
11+y=15
y=15-11
y=4
x-y=7. (2)
so add. eqn 1 and. 2
2x=22
so, x=11
substitute x=11 in eqn 1
so x+y =15
11+y=15
y=15-11
y=4
Answered by
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44 is the answer solved in above... Thank you
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aayushthakur543:
wrong
can you tell the right ans plz....
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