If 4−5=−12 and y = 3, what is x ?

XeniaSis asked Apr 26, 2023

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XeniaSis asked Apr 26, 2023

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28 votes

Substituting y=3 in 4x-5y=-12 we get:

$4x-5\cdot3=-12.$

Simplifying the above equation we get:

Adding 15 to the above equation we get:

$\begin{gathered} 4x-15+15=-12+15, \\ 4x=3. \end{gathered}$

Finally, dividing the above equation by 4 we get:

$\begin{gathered} (4x)/(4)=(3)/(4), \\ x=(3)/(4)\text{.} \end{gathered}$

Answer: If 4x-5y=-12 and y=3 then:

$x=(3)/(4)\text{.}$

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