Whats the equation for X 3?

Hetong asked Mar 19, 2023

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Hetong asked Mar 19, 2023

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29 votes

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

$\begin{gathered} 9\cdot3-7=20 \\ 27-7=20 \\ 20=20 \end{gathered}$

so the answer is letter A

SARI answered Mar 23, 2023

by SARI

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