-2x+5y=-15 5x+2y=-6 what is the solution

1 answer:

5 0

<h2>Greetings!</h2><h3>To solve this, you can multiply one of the equations by a number so that one of the unknown values are the same as the other equation. Or simply multiply both numbers before the x together:</h3>

(-2x + 5y = -15 ) x 5 =

-10x + 25y = -75

(5x+2y=-6) x -2 =

-10x -4y = 12

<h3>Now, you can add or minus the two equations, but seeing as both values before the x are negative we can add the two equations to cancel out the x:</h3>

-10x -4y = 12 +

-10x + 25y = -75 =

0x + 21y = -63

21y = -63

<h3>Simply divide -63 by 21 to find y:</h3>

-63 ÷ 21 = -3 , so the value of y = -3

<h3>Now you can substitute this value into one of the equations:</h3>

5x + 2y = -6

5x + 2(-3) = -6

5x = -6 - (-6)

5x = -6 + 6

5x = 0

x = 0

<h3>So that means x = 0 and y = -3</h3>
<h2>Hope this helps!</h2>

You might be interested in

Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how ma

DiKsa [7]

She wrote a 4 instead of a 3.

There are only 3 numbers that are greater than 7. They are 8, 9, and 10. Mariah must have include 7 in her list. That is how she got 4 instead of 3.

6 0

3 years ago

Read 2 more answers

-4x-6=-5y+9

wlad13 [49]

4x-5y=-15
That’s the answer your welcome

3 0

3 years ago

Please help urgent!!!!! <br><br> Will mark brainlest or something like that

r-ruslan [8.4K]

Answer:

im sry could u pls rewrite the expression?

Step-by-step explanation:

4 0

2 years ago

Write an equation for the line that is parallel to y = −2x and passes through the point (0,7).

lesya [120]

Answer:

B. $\displaystyle y = -2x + 7$

Step-by-step explanation:

The y-intercept is given to us, which is $\displaystyle [0, 7],$ and Parallel Lines have SIMILAR <em>RATE </em><em>OF CHANGES</em><em> </em>[<em>SLOPES</em>],<em> </em>so −2 remains the way it is.