2 years ago

consider the systems of equations below 4x-8y=12 11x+7y=33 determine if they can be used to create an equivalent system.

Mathematics

1 answer:

masya89 [10]2 years ago

7 0

Answer:

I am ten and know the answer. 4x5-8=12

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Step-by-step explanation:

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I need to solve for x and y. Any help is greatly appreciated! Thank you!

Inessa05 [86]

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x+y = - 2 Eqn 2

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Putting x=-y-2 in eqn 1

$2(-y-2)-3y=-9\\-2y+4-3y=-9\\-5y-4=-9\\Adding\ 4\ on\ both\ sides\\-5y-4+4=-9+4\\-5y=-5\\Dividing\ both\ sides\ by\ -5\frac{-5y}{-5}=\frac{-5}{-5}\\y=1\\Putting\ y=1\ in\ eqn\ 2\\x+1=-2\\Subtracting\ 1\ from\ both\ sides\\x+1-1=-2-1\\x=-3$

Hence,

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Keywords: Linear equations, Variables

Learn more about linear equations at:

#LearnwithBrainly

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