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Mathematics 20 Online
OpenStudy (anonymous):

Choose the missing step in the given solution to the inequality 2x - 14 > -4 - 3x. 2x - 14 > -4 - 3x missing -10 > -5x 2 < x

OpenStudy (jhannybean):

You can solve this by moving all the constants on one side, and the variables on the other.

OpenStudy (anonymous):

okay yes start over

OpenStudy (jhannybean):

we have 2x - 14 > -4 - 3x and we're going to put our x values all on the right side, to do this we need to SUBTRACT -2x from the left and right side. -2x + 2x -14 > -4 -3x - 2x This will give us -14 > - 4 - 5x Do you see how i did this so far?

OpenStudy (anonymous):

yes i see that

OpenStudy (jhannybean):

okay, continuing. we want to have our "x" value by itself on the right side of the inequality, and in order to do this we're going to have to ADD 4 to both sides of this inequality. -14 + 4 > - 4 + 4 - 5x This helps us isolate our -5x on one side and keep our constants on the other. we can simplify this to -10 > -5x See how i did that?

OpenStudy (anonymous):

ohh okay yes i see so now it would be 2 < x because you divide -10 and -5

OpenStudy (jhannybean):

Yes :) -10/-5 < -5/-5 *x 2 < x When dividing by a negative the inequality sign flips ! :) Good job :D

OpenStudy (anonymous):

Thank you so much !

OpenStudy (jhannybean):

np :)

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