R relapse New member Joined Jan 25, 2006 Messages 13 Feb 1, 2006 #1 hello, i'm trying to solve: 6x-(2x+3) =>4x-5 i keep getting -3=>5, this can't be right. can someone tell me what i'm doing wrong? first thing i do is distribute the negative. ( => is greator than/equal to )
hello, i'm trying to solve: 6x-(2x+3) =>4x-5 i keep getting -3=>5, this can't be right. can someone tell me what i'm doing wrong? first thing i do is distribute the negative. ( => is greator than/equal to )
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Feb 1, 2006 #2 \(\displaystyle \L 6x - (2x + 3) \ge 4x - 5\quad \Rightarrow \quad - 3 \ge - 5\) Is that always true?
\(\displaystyle \L 6x - (2x + 3) \ge 4x - 5\quad \Rightarrow \quad - 3 \ge - 5\) Is that always true?
mmm4444bot Super Moderator Joined Oct 6, 2005 Messages 10,958 Feb 1, 2006 #3 If you end up with a false statement, then there are no solutions. ~ Mark
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Feb 1, 2006 #4 But in this case it is true! So it is true for every x. The solution set is the set of real numbers.
mmm4444bot Super Moderator Joined Oct 6, 2005 Messages 10,958 Feb 1, 2006 #5 Whoopsie Daisy! pka said: But in this case it is true! So it is true for every x. Click to expand... I should have checked relapse's work before posting so quickly. Serves me right. ~ Mark
Whoopsie Daisy! pka said: But in this case it is true! So it is true for every x. Click to expand... I should have checked relapse's work before posting so quickly. Serves me right. ~ Mark
G Gene Senior Member Joined Oct 8, 2003 Messages 1,904 Feb 1, 2006 #7 After you correct the sign on the 5 ------------------ Gene