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Operations on Rational Numbers

Question

Verify $$- (-x) = x$$ for $$x = \dfrac{-7}{9}$$

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Solution

Verified by Toppr

Here,
$$LHS=-(-x )=-\left(-\left( \dfrac{-7}9\right)\right) =\left(\dfrac{-7}9\right) =\dfrac{-7}{9} = x=RHS$$

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Similar Questions

Q1

Verify $$- (-x) = x$$ for $$x = \dfrac{-7}{9}$$

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Q2

Verify that

| x + y | ⩽ | x | + | y |

when

(i)

x = - 3 & y = \frac{- 7}{9},

(i i)

x = 0.8 & y = \frac{- 7}{9}

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Q3

Question 103(ii)
Verify - (- x) = x for

x = \frac{- 7}{9}

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Q4

Verify: $- (- x) = x$ for $x = \frac{- 7}{9}$ .

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Q5

x = \frac{- 9}{11}

and

y = \frac{5}{7}

, verify that

(- x) + (- y) = - (x + y)

.

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