You can write:
4 y - x = - 3
like:
- x + 4 y = - 3
Now:
- x + 4 y = - 3
+
2 x - 4 y = 14
_________________
- x + 2 x + 4 y - 4 y = - 3 + 14
x + 0 = 11
x = 11
4 y - x = - 3
4 y - 11 = - 3 Add 11 to both sides
4 y - 11 + 11 = - 3 + 11
4 y = 8 Divide both sides by 4
4 y / 4 = 8 / 4
y = 2
The solutions are :
x = 11 , y = 2
I must solve the equation using elimination. I have have only 1 Variable on the left side of the equal sign.
( Elimination is most convenient when the variables are lined up )
2x-4y=14
4y-x=-3
1 answer
1 answer