Question

If x = 8/5 then verify -(-x) = x​

Answer 1

Heyaa☺

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Given,

x = 8/5

R.T.V =》 -(-x) = x

Substituting 8/5 in x.

we get,

-(-8/5) = 8/5.

(-) × (-) = +.

=》 8/5 = 8/5.

L.H.S = R.H.S

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Hope you understand..✌

Answer 2

$\huge \underline \mathfrak {Given:-}$

x = 8/5

$\huge \underline \mathfrak {To\: prove:-}$

-(-x) = x

$\huge \underline \mathfrak {Proof:-}$

LHS = -(-x)

According to question, x = 8/5

= -(-8/5)

There is one minus sign outside the bracket, so it will change the sign of content inside the bracket.

= 8/5

Now,

RHS = x

It is given in the question that value of x is 8/5

So, RHS = 8/5

Therefore, LHS = RHS

It means that -(-x) = x.

Hence proved.