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Verona is solving the equation -3+4x=9. In order to isolate the variable term using the subtraction property of equality, which number should she subtract from both sides of the equation. A: -4B: -3C: 3D: 4

Respuesta :

In order to solve the equation, we should do:

[tex]\begin{gathered} -3+4x=9 \\ -3+4x+3=9+3 \\ 4x=12 \\ x=\frac{12}{4} \\ x=3 \end{gathered}[/tex]

Then, in the step to isolate the variable term (4x), we should add 3 to both sides of the equality (see step 2).

Answer: C: 3.

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