3 years ago

-3x-7y=-14 7x+8y=-9 What’s the x and y?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Let's graph both functions

The solutions are the coordinates of the intersection point

The intersection point is (-7,5)

● x = -7

● y = 5

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$\huge\mathfrak\green{answer}$

$= q - \frac{q7}{10} c = \frac{41}{5}$

$\red{multiply}$

$= q - \frac{cq7}{10} = \frac{41}{5}$

$\red{subtract \: q \: from \: both \: sides}$

$= q - \frac{cq7}{10} - q = \frac{41}{5} - q$

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$\red{multiply \: 10 \: both \: sides}$

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$\red{now \: divide}$

$= \frac{ - cq7}{ - q7} - \frac{82}{ - q7} - \frac{10q}{ - q7}$

$\red{simplify}$

$= c = - \frac{82 - 10q}{q7} (q≠0)$

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