x+y=11/2 and xy =5/2 find x-y
step by step explanation plz
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We have,
2x+3y=9 (1)
3x+4y=5 (2)
Now,
y=39−2x
On putting the value of y, in equation (2), we get
3x+4(39−2x)=5
3x+336−8x=5
9x+36−8x=15
x=15−36
Now, put the value of x in equation (1), we get
y=39−2(−21)
y=39+42
y=351=17
Hence, this is the answer.
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