3 years ago

The work of a student to solve a set of equations is shown:

1 answer:

Serhud [2]3 years ago

7 0

In step 2 .. because when you multiple by -4 in step 1 , the equation in step 2 will be ( -4y =-16 + 8z)

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Leno4ka [110]

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Leno4ka [110]

Step-by-step explanation:

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egoroff_w [7]

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Svetradugi [14.3K]

Answer:

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Step-by-step explanation:

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nadya68 [22]

$\left\{\begin{array}{ccc}3x-6y=20&|\cdot2\\2x-4y=3&|\cdot3\end{array}\right\\\left\{\begin{array}{ccc}6x-12y=40\\6x-12y=9\\\end{array}\right$

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3 years ago