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Answered

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-2x - 5y = -1
8x + 4y = 16

To start solving the system of equations above, what number would be a good option to multiply the top equation by?


If someone could answer this asap that would really help also doing brainliest answer!

Sagot :

The good option to multiply the top equation by is -4

REASON :-

This is because, when we solve the equations, in the left side of first equation :-

☆ -2 can be multiplied by -4 to get the value 8 on the left side of second equation.

☆ This can help in easier elimination in the given set of equations.

■ The process is to be done as per the given below way :

[tex] (-4)×-2x - 5y = -1 \\ 8x + 4y = 16[/tex]

[tex] = > ( - 4 \times - 2)x - 5y = -1 \\ 8x + 4y = 16[/tex]

[tex] = > 8x - 5y = -1 \\ 8x + 4y = 16[/tex]

Now the 8x on both equations can be cut.

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