SandrineP661429 SandrineP661429

25-10-2022
Mathematics

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whats the equation for X 3?

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EmeraldK243526 EmeraldK243526

25-10-2022

we need to verify for each equation if x=3 is a solution. If we replace x by 3 in the first equation we get

[tex]\begin{gathered} 9\cdot3-7=20 \\ 27-7=20 \\ 20=20 \end{gathered}[/tex]

so the answer is letter A

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