Question

HELP PLEASE !!!
4X+5Y=13
3X+Y=-4

Answer 1

@agent0smith

Answer 2

@Hero

Answer 3

@MERTICH

Answer 4

please show steps

Answer 5

What's the question

Answer 6

4x + 5y = 13
3x + y = -4

System of equations...

Lets solve the bottom equation for 'y'

3x + y = -4

Subtract 3x from both sides to isolate 'y'

3x + y =-4
-3x -3x
------------
y = -3x - 4

Now take that...and substitute it into the first equation for every 'y' we see

4x + 5y = 13

would then become

4x + 5(-3x - 4) = 13

Distribute the 5...

4x - 15x - 20 = 13

Combine like terms...

-11x - 20 = 13

Add 20 to both sides of the equation

-11x = 33

divide both sides by -11...

x = -3


Now...since we know x = -3....we can solve for 'y' by plugging that into either of our original equations

4x + 5y = 13

becomes

4(-3) + 5y = 13

-12 + 5y = 13

Add 12 to both sides of the equation

5y = 25

divide both sides by 5...

y = 5

So we have x = -3 and y = 5

Answer 7

@iambatman 4x+5y=13 3x+y=-4

Answer 8

Let me know if that doesn't make sense @dxgx3

Answer 9

@johnweldon1993 THANK YOU SO MUCH !!!!