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Question

If LHS of an equation is x−32 and the solution of the equation is 6, then which of the following can be the RHS of this equation?

A
x4
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B
x+68
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C
9x
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D
3x2
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Solution

The correct options are
A x4
B x+68
C 9x
The solution of the equation is 6.
If we substitute x=6 in LHS we get,
x32=632=32.

For the equation, the RHS should also be equal to 32 when x=6.

Substituting x=6 in all the options, we get
(i) x4=64=32

(ii) x+68=6+68=128=32

(iii) 9x=96=32

(iv) 3x2=3×62=182=9.

Hence, among all of the given options x4, x+68 and 9x can be the RHS of the equation.

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