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x(1/2), 1/2 * x

Notice that all given answers options are in fraction form therefore we have to convert 0.5x into fraction form. and in given options fraction bar '___' is use as '/' or ÷ actually '___', '/' and '÷' has same meaning divide.

1 We know that 0.5 or .5 is --- = 1/2 2 5 1 or 0.5 = --- = --- = 1/2 (in words one half) 10 2 Therefore 1 0.5x = - x or 2 x = --- or 2 = x/2 or = (1/2)x or = x (1/2)

Actually 1/2x or 1/(2x) or (2x)^-1 or 1 ÷ 2x 1 means ----- which is not equal to 0.5x or x/2 or 1/2 * x 2x

we should also notice that here x is as nominator in 0.5x and from given option x is as nominator only in 2nd and 3rd option x(1/2), 1/2*x.

(x is N O M I N A T P O R ) / | \ / | \ / | \ / | \ 0.5 x x(1/2) 1/2*x

but x is at denominator in given four option 1/2x, 1/(2x), (2x)^(-1)

(x is D E N O M I N A T O R ) / | \ / | \ / | \ / | \ 1/2x 1/(2x) (2x)^(-1)

Therefore correct answer from given option is x (1/2) and 1/2 * x.

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1/3 -2/3 2n - 2n -------------- = ? -2/3 2n

_____________________ / _____________ / / ____ / / / 2 / 4 / 4 . / 4 / \/ \/ / -------------------- / 3 \/ 2

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