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3 years ago

-5x+7y=-34 -5x+3y=-6

Mathematics

1 answer:

lisov135 [29]3 years ago

7 0

Answer:

Step-by-step explanation:

-5x + 7y = -34 ⇒ -5x = -34 - 7y

-5x + 3y = -6

-34 - 7y + 3y = -6

-34 - 4y = -6 {add 34 to both sides}

-4y = 28 {divide both sides by (-4)}

y = - 7

-5x + 3y = -6

-5x + 3(-7) = -6

-5x - 21 = -6 {add 21 to both sides}

-5x = 15 {divide both sides by (-5)}

x = -3

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3 years ago

Simplify, state all restrictions.

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The simplified expression is $\frac{1 - x - y}{x + y}$ and the restriction is $y \ne -x$

<h3>How to simplify the expression?</h3>

The expression is given as:

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Rewrite the expression as products

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Express 4x^2 - y^2 as (2x - y)(2x + y)

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