4 years ago

Analyze the steps. In which step did the Jolon make an error?

Mathematics

2 answers:

schepotkina [342]4 years ago

5 0

Answer:

It’s c

Step-by-step explanation:

I just took the test

Lemur [1.5K]4 years ago

4 0

Where are the steps???

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4 years ago

Sistema de ecuaciones.5x+2y=-152x-2y=-6

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Tnemos el sisema de ecuaciones:

$\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}$

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

$\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}$

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

$\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}$

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