Question

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Answer 1

Answer:

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Answer 2

⚝Question:

Verify that -(-x) = x for

• (i)x=11/5
• (ii)x=-13/17

⚝Solution:

(i)x=11/5

➠-(-11/5)=11/5

➠[(-)×(-)=(+)]So, 11/5=11/5

➠[Cross Multiply]11×5=5×11

➠55=55

➠L.H.S=R.H.S✅

(ii)x= -13/17

➠-[-(-13/17)]= -13/17

➠-[13/17]= -13/17

➠-13/17= -13/17

➠[Cross Multiply]-13×17 = 17× -13

➠-221= -221

➠L.H.S= R.H.S ✅

✯Points to Remember:

• Minus×Minus=Plus
• Plus×Minus[and Vice Versa]=Minus
• Plus×Plus=Minus