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Mathematics 19 Online
OpenStudy (otherworldly):

Solve for x: 4 − (x + 2) < −3(x + 4) x < −7 x > −7 x < −9 x > −9 I think it is B

OpenStudy (warlock5):

No; X < -7. I think you forgot to distribute the negative on the left hand side

OpenStudy (otherworldly):

yeah but remember that when dividing by a negative number u flip the sign

Awolflover1 (awolflover1):

Yes Correct

OpenStudy (otherworldly):

wait whats correct A or B @Awolflover1

OpenStudy (warlock5):

A is correct

OpenStudy (warlock5):

http://www.webmath.com/_answer.php

Awolflover1 (awolflover1):

A is Correct

OpenStudy (otherworldly):

ok

Awolflover1 (awolflover1):

Divide both sides by 2 \[\frac{ 2x }{ 2 } < \frac{ -14 }{ 2}\]

OpenStudy (otherworldly):

r u guys sure because in my lesson it says if u r dividing or multiplying the inequality u switch the signs...?

Awolflover1 (awolflover1):

yes im sure this one stays ''< ''

OpenStudy (otherworldly):

@3mar

OpenStudy (3mar):

3 min please

OpenStudy (3mar):

Sorry 3 min extented for 1 hour or more. Sorry for being late! It was an emergency call.

OpenStudy (3mar):

For this inequality, we need to separate the variable x in one side and the other numbers are in the other side; \[4-(x+2)<-3(x+4)\] \[4-x-2<-3x-12\] \[(4-2)-x<-3x-12\] \[2-x<-3x-12\] \[3x-x<-12-2\] \[2x<-14\] \[x<-7\] So the correct answer will be the first choice (A), not (B). r u guys sure because in my lesson it says ""if u r dividing or multiplying the inequality u switch the signs...?"" This is true only and only if you are dividing or multiplying the inequality by negative number or value. That is it!

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