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Q.

Among the following, an equation x=4  is a solution of

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a

x5=3

b

2x+5=3

c

2x5=3

d

x3=7

answer is C.

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Detailed Solution

If x=4

Option ( A ) : x5=345=1 it  is not a solution of equation

Option ( B ): 2x+5=32(4)+5=313=3  it  is not a solution of equation

Option ( C ) : 2x5=3 2×45=3 85=33=3  it is a solution of equation

Option ( D ) : x3=743=71=7  it  is not a solution of equation

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