Question 495043: Is this statement always, sometimes, or never true. if x and y are intergers, then lx+yl=lxl+lyl. Please give exmaple.
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Is this statement always, sometimes, or never true. if x and y are intergers, then lx+yl=lxl+lyl. Please give exmaple.
**
lx+yl=lxl+lyl
This statement is always true if x and y are of the same sign, that is, both negative or both positive, but not true if they are of opposite sign.
Examples:
x=2, y=3
|2+3|=|2|+|3|
5=5
..
x=-2, y=-3
|-2-3|=|-2|+|-3|
5=5
..
x=-2, y=3
|-2+3|=|-2|+|3|
1≠5
|
|
|
