If 12x+17y=48 and 17x+12y=68 , What us the value of x-y ?
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Step-by-step explanation:
12 ×[12x+17y]=48×12........ (i)
17 ×[17x+12y]=68×17........ (ii)
subtract (ii)-(i)
x=48/29
Put the value of x in eq (i)
Y=48/29
x-y=0 (ans.)
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