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you can divide 2x - 2y= 10 by 2 to make it simple (divide both sides by 2). It will give you x - y = 5. However, I disagree with Jim on the rest. Yes, there are a lot of numbers which difference will give you 5 but you are provided with a clue. ( ,0) - a
point. Any point is designated by (x,...
What you want to do is solve for x.
Let's take on the 1st problem.
You want to find out what numbers can x be in order for (-5+6x) to be less than 13 but more or equal to -11.
-11 ≤ -5 +6x < 13
Add 5 to all sides (because whatever you do to one side, you...