Question

x=y-2;x+3y=2

Answer 1

y=1, x=-1

Answer 2

How did you get that?

Answer 3

x+3y=2
Since we know x=y-2, we can plug that into our equation and solve for y

(y-2)+3y=2
y+3y=4
4y=4
y=1

the plug that back into the other equation x=y-2

x=(1)-2
x=-1

Answer 4

so you add 2 to both sides?

Answer 5

yeah

Answer 6

(y-2)+3y=2
+2 +2
y+3y=4
4y=4
y=1

the plug that back into the other equation x=y-2

x=(1)-2
x=-1

Answer 7

x=y-2 ===> x-y =-2 ;x+3y=2 ===> subtractthe 2 equations ==>-3y=-4 ==> y =4/3 ===> subtitute in the first equatiom ===> x=4/3 -2 = -2/3

Answer 8

thank you, thats very helpful