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2x-y = 4
x + y = 5
----------+
3x = 9
x = 3
x+y = 5
3 + y = 5
y = 2
2.x-y=3 dan x+2y=6
x-y = 3
x+2y = 6
---------- -
-3y = -3
y= 1
x-y = 3
x-1 = 3
x = 4
2x - y = 4
x + y = 5
----------- +
3x = 9
x = 9:3
x = 3
x + y = 5
3 + y = 5
y = 5 - 3
y = 2
2. x-y=3 dan x+2y=6
x - y = 3
x + 2y = 6
------------ -
-3y = -3
y = -3 : -3
y = 1
x - y = 3
x - 1 = 3
x = 3 + 1
x = 4