Question

Verify that |-x|=| x| for the following values when x =4 by 7

Answer 1

x = 4÷7

⇒|x| = 4/7 = 0.571428...

and, thus, |–x| = –(–x) = –(–4/7)= 0.571428...

Therefore, |x| = |–x|

Answer 2

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