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Question

If xab+c+xbc+b+xca+b=3 then the value of x is:

A
abc
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B
1abc
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C
a+b+c
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D
1a+b+c
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Solution

The correct option is C a+b+c
xab+c+xbc+a+xca+b=3

xab+c+xbc+a+xca+b3=0

xab+c1+xbc+a1+xca+b1=0


xabcb+c+xbcac+a+xcaba+b=0

x(a+b+c)b+c+x(a+b+c)c+a+x(a+b+c)a+b=0

x(a+b+c)(1b+c+1c+a+1a+b)=0

x(a+b+c)=0

x=a+b+c



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