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Question 278534: -2x+15>3
Answer by nyc_function(2741)   (Show Source):
You can put this solution on YOUR website! -2x + 15 > 3
Treat it like a regular equation.
Subtract 15 from both sides.
-2x > 3 - 15
-2x > -12
Divide both sides by -2. Don't forget to reverse the inequality sign since we are dividing by a negative number.
x < -12/-2
Final answer: x < 6
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What does this answer mean?
It means that whatever the value of x is, it must be smaller than 6 to make the original inequality a true statement.
Want to see the prove?
Let's say that x is 5.
When x is 5 (or any number less than 6) we will make a true statement.
You were given -2x + 15 > 3.
Replace x with my chosen number 5 and simplify.
-2(5) + 15 > 3
-10 + 15 > 3
5 > 3....Since 5 is bigger than 3, we just made true statement proving that the correct answer is x < 6.
nycfunction@yahoo.com
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