Solve by elimination. 5x-7y=19 7x-7y=-7

Mathematics

1 answer:

SVEN [57.7K]3 years ago

4 0

Answer:

(x,y)=(-13,-12)

Step-by-step explanation:

5x - 7y = 19

7x - 7y = -7 Multiply both sides of the equation by -1

Which then gives you :

5x-7y=19 Sum the equations vertically to eliminate

-7x+7y=7 at least on variable

-2x=26 Divide both sides of the equation by -2

X=-13 Substitute the given value of x into the equation 7x - 7y =-7

7 x(-13)-7y=-7 solve the equation for y

y=-12

Thus gives you (-13,-12)

Hope this was useful!!! Sorry if it's wrong.

You might be interested in

Define sets and vectors

Afina-wow [57]

Answer:

set is a collection of distinct elements. vector is an element of a vector space.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the domain from the ordered pair {(1, 1), (2, 4), (3, 9), (4, 16)}

scoray [572]

Answer:

Explanation:

<h3><u>Domain</u><u> </u><u>and</u><u> </u><u>Range:</u></h3>

Let R be a relation from A to B. Then the set of first components or the set of elements of A are called domain and the set of second components or the set of elements of B are called the range.