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Which equation has the solution x=8 ? 5x+2=42 2x+7=24 4x-1=55 7x-2=-54

Which equation has the solution x=8 x=8 ?\newline5x+2=42 5 x+2=42 \newline2x+7=24 2 x+7=24 \newline4x−1=55 4 x-1=55 \newline7x−2=−54 7 x-2=-54

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Solve a system of equations in three variables using eliminationright chevron icon

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Q. Which equation has the solution x=8 x=8 ?\newline5x+2=42 5 x+2=42 \newline2x+7=24 2 x+7=24 \newline4x−1=55 4 x-1=55 \newline7x−2=−54 7 x-2=-54
  1. Substitute x=8x=8: Substitute x=8x=8 into the first equation 5x+2=425x+2=42 and check if the equation is true.\newline5(8)+2=425(8) + 2 = 42\newline40+2=4240 + 2 = 42\newline42=4242 = 42
  2. Check first equation: Since the first equation holds true for x=8x=8, there is no need to check the other equations. We have found the equation with the solution x=8x=8.

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