How do u do system of equations? I have one problem and I can't deal with it?
2x+3y+1=0
3x-y-4=0
Solve the following system:
{1+2 x+3 y = 0 | (equation 1)
-4+3 x-y = 0 | (equation 2)
Express the system in standard form:
{2 x+3 y = -1 | (equation 1)
3 x-y = 4 | (equation 2)
Swap equation 1 with equation 2:
{3 x-y = 4 | (equation 1)
2 x+3 y = -1 | (equation 2)
Subtract 2/3 × (equation 1) from equation 2:
{3 x-y = 4 | (equation 1)
0 x+(11 y)/3 = (-11)/3 | (equation 2)
Multiply equation 2 by 3/11:
{3 x-y = 4 | (equation 1)
0 x+y = -1 | (equation 2)
Add equation 2 to equation 1:
{3 x+0 y = 3 | (equation 1)
0 x+y = -1 | (equation 2)
Divide equation 1 by 3:
{x+0 y = 1 | (equation 1)
0 x+y = -1 | (equation 2)
Collect results:
Answer: | {x = 1 y = -1
