Question

verify that -(-x)=x for
x=2/15​

Answer 1

Answer:

Step-by-step explanation:

The Given Equation: $-(-x) =x$

We know that,

  If any variable stays in the brackets, It's become a form of multiplication.

And in multiplication,

  Positive Variable (+) & Positive Variable (+) makes Positive (+)

  Positive Variable (+) & Negative variable (-) makes Negative (-)

  Negative Variable (-) & Positive Variable (+) makes Negative (-)

  Negative Variable (-) & Negative Variable (-) makes Positive (+)

And also know that,

  If there is no  mathematical process marks (Plus(+) or Minus (-) before of any variable, the variable must be Positive (+)

Now Look at the upper equation...

The Left Hand Side = $-(-x)$

  = $+x$ [ ∵ Negative Variable (-) & Negative Variable (-) makes Positive (+) ]

The Right Hand Side = $x$

  = $+x$ [ ∵ If there is no  mathematical process marks (Plus(+) or Minus (-) before of any variable, the variable must be Positive (+) ]

So, the Left-hand side equals to the right-hand side.

And there is no need to give a value of $x$ (Such as $\frac{2}{15}$ ).

For any Valu of $x$ , the equation is verified.

Hope you undersstand the procces...

By- Md. Mominur Islam Mahim.

Answer 2

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