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17 votes
17 votes
What are some possible solutions for the following inequality?

-3x+5x-2>-4x+1

User Plof
by
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2 Answers

21 votes
21 votes

Answer:

Any value greater than 0.5.

Explanation:

First, set the inequality to an equation and solve for x:


-3x+5x-2=-4x+1\\2x-2=-4x+1\\2x-2+4x=-4x+1+4x\\6x-2=1\\6x-2+2=1+2\\6x=3\\((1)/(6))6x=3((1)/(6))\\x=(1)/(2)

This is the value at which the inequality equals 0. To test the inequality and determine whether x is greater or less than
(1)/(2), choose any value of x that is easy to work with on either side of
(1)/(2):

For x=0:

-3(0)+5(0)>-4(0)+1

0>1 This is not a true statement. Therefore, x is not less than
(1)/(2).

For x=1:

-3(1)+5(1)>-4(1)+1

-3+5>-4+1

2>-3 This is a true statement. Therefore, x is any value greater than
(1)/(2).

User Kgutwin
by
3.1k points
14 votes
14 votes
x>1/2 is a solution
User Loyal
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3.4k points