5/7(b-35) equals?
回答 (6)
(5/7)(b - 35) = (5b/7) - 25
As written, the expression according to PEMDAS is equivalent to 5(b-35)/7
It is not the same as 5/[7(b-35)]
Hence it is equal to 5b/7 - 5(35/7) = 5b/7 - 25
5/7b - 25 =
5/7b = 25
(7/5)5/7b = (7/5)25
b = 35.
(5 (b - 35))/7
= (5 b)/7 - 25
Should be shown as :-
(5/7) ( b - 35 ) = 5b/7 - 25
收錄日期: 2021-04-18 18:03:09
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