Solve it fast by substitution method -
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x/2 - y/9= 6
→(9x-2y)/18=6
→9x-2y = 108 .
→x=(108+2y)/9 ....(1)
and ,
x/7+ y/3=5 .
→3x + 7y = 105
Put the value of x obtained in (1).
→3(108+2y)/9+7y = 105 .
→108 /3+2y /3 + 7y = 105 .
→36+23y/3= 105
→ 105-36 = 23y/3
→69×3/23= y .
→y = 9.
Put , y=9 in (1).
x =(108+18)/9= 126/9= 14
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