Question

Solve this system of equations
{4y+3x=0
{y+x=1

Answer 1

You need to multiply the 2nd equation by something that will either get rid of the y's or the x's... I will get rid of the y's so we need a -4y on the bottom

4y + 3x = 0
-4(y + x = 1)

4y + 3x = 0
-4y - 4x = -4

Now add the equations.

-x = -4
x = 4

plug into one of the equations.

y + x = 1
y + 4 = 1
y = -3

(4,-3) is the answer

Answer 2

Thanks :)