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Mathematics 7 Online
OpenStudy (anonymous):

just wondering is 4-d=-(d-4) identity or no solution

OpenStudy (anonymous):

multiply both sides of the equation by -1. What do you get?

OpenStudy (anonymous):

4-d=-1d+4?

OpenStudy (anonymous):

the statement is true.

OpenStudy (anonymous):

are there any values of "d" where the lhs <> rhs?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

then you have an "identity" :-) d=d

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