which of the following in not equivalent to 3 upon 7 (a) minus 15 upon - 35( B) part 15 upon 35 (C )6 upon 14 the minus (d) 9 upon 21
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Ll of them are equal to 3/7 . I think the question is wrong
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Given : -15 / -35 , 15/35 , 6/14 , 9/21
To Find : which of the given is not equivalent to 3 upon 7
Solution:
-15 / -35
= -5 * 3 / (-5 * 7)
cancelling - 5
= 3/7
15 / 35
= 5 * 3 / (5 * 7)
= 3/7
6 / 14
= 2 * 3 / (2 * 7)
= 3/7
9/21
= 3 * 3 / ( 3 * 7)
= 3/7
all fractions are equal to 3/7
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