Question 948990
X=y-11 and x-3y=1
x=y-11
x-3y=1 Add 3y to each side
x=3y+1 Substitute first equation for x
y-11=3y+1 Subtract y from each side
-11=2y+1 Subtract 1 from each side
-12=2y Divide each side by 2
-6=y ANSWER 1:y=-6
x=y-11=-6-11=-17 ANSWER 2: x=-17
CHECK
x=y-11
-17=-6-11
-17=-17
x-3y=1
-17-3(-6)=1
-17-(-18)=1
1=1