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42 votes
42 votes
-28=-7(3x+4)+21x thank you to anyone who helps

User Jonathan Gilligan
by
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1 Answer

16 votes
16 votes


-28=-7(3x+4)+21x\\\\\implies -21x -28 +21x = -28\\\\\implies -28 =-28\\\\\text{The equation is true for all x.}

User Ganesh Somani
by
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