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3 years ago

Question 7

Mathematics

1 answer:

prisoha [69]3 years ago

5 0

To solve this problem you must apply the proccedure shown below:

1. You have the following system of equation:

$\left \{ {{-4x-2y=-12} \atop {4x+8y=-24}} \right.$

2. As you can see, you can cancel out the variable $x$ , because it has equal coefficient with different signs at both equations. Then, if you add both equations, you obtain:

$6y=-36\\y=-6$

3. Let's substitute the value obtained into the second equation to calculate the other variable:

$4x+8(-6)=-24\\4x-48=-24\\x=6$

The answer is: (6,-6).

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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