PLEASE HELP ME
solve the following system of equations x+y=-5 and -3x+y=7
A(1,4)
B(-1,-4)
C(4,1)
D(-4,-1)
solve the following system of equations x+y=-5 and -3x+y=7
A(1,4)
B(-1,-4)
C(4,1)
D(-4,-1)