lillyneel lillyneel

18-08-2022
Mathematics

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4.2(15+5x)= -20x -21 - x

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Medunno13 Medunno13

18-08-2022

[tex]4.2(15+5x)=-20x-21-x \\ \\ 63+21x=-21x-21 \\ \\ 3+x=-x-1 \\ \\ 4+x=-x \\ \\ 4=-2x \\ \\ x=\boxed{-2}[/tex]

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