Answer:
Explanation:
solving by elimination means to get rid of one of the variables, pick either one, X or Y and use the other equation to make it zero.
3x - y = 5
4x + y = 9
+______ add the two equations, column for column,
7x + 0y = 14
now solve for x, that is, get x by itself
7x / 7 = 14/7
x = 2
Now that you've solved for x, plug that x into either equation.
3(2) - y = 5
6-y = 5
6-5 = y +5-5
1 = y
Now you have both :)