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CBSE Class 8 Answered

How to verify that -(-x)=x for  1.x=11/15 2.x= -13/17
Asked by surendra.suri | 04 Jun, 2020, 03:43: PM
answered-by-expert Expert Answer
begin mathsize 16px style 1. space straight x equals space 11 over 15
straight L. straight H. straight S space equals space minus left parenthesis negative straight x right parenthesis space equals negative space open parentheses negative 11 over 15 close parentheses equals 11 over 15
straight R. straight H. straight S space equals space straight x space equals 11 over 15
straight L. straight H. straight S space equals space straight R. straight H. straight S space
rightwards double arrow negative left parenthesis negative straight x right parenthesis space equals space straight x

2. space straight x equals space fraction numerator negative 13 over denominator 17 end fraction
straight L. straight H. straight S space equals space minus left parenthesis negative straight x right parenthesis space equals negative open square brackets negative open parentheses fraction numerator negative 13 over denominator 17 end fraction close parentheses close square brackets equals negative space open parentheses 13 over 17 close parentheses equals negative 13 over 17
straight R. straight H. straight S space equals space straight x space equals negative 13 over 17
straight L. straight H. straight S space equals space straight R. straight H. straight S space
rightwards double arrow negative left parenthesis negative straight x right parenthesis space equals space straight x end style
Answered by Yasmeen Khan | 04 Jun, 2020, 06:37: PM
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