This is the hardest thing

solve the following system using the substitution, elimination, or graphing method for the x coordinate:
x+y=1
5x+y=-6

X+y=1
5x+y=-6

lets solve by substitution
make x+y=1 into y= form
-x both sides
y=-x+1
5x+y=-6
plug in
5x+(-x+1)=-6
5x-x+1=-6
4x+1=-6
-1 both sides
4x=-7
÷4 both sides
x=-7/4
solve for y
x+y=1
-7/4+y=1
+7/4 both sides
y=11/4

check if it's correct on the second equation
5 (-7/4)+(11/4)=-6
-35/4+11/4=-6
-24/4=-6
-6=-6
answers are true

x=-7/4
y=11/4

Ido not know i use to