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Mathematics 14 Online
OpenStudy (anonymous):

-5x + 7 < 42

OpenStudy (abb0t):

1. Subtract 7 from 42 2. Divide by (-5) NOTE: remember to flip the inequality because you are dividing by a negative number!

OpenStudy (anonymous):

-5x+7-42

OpenStudy (anonymous):

or -42<-5x+7<42

OpenStudy (anonymous):

whats the answer ? 7?

OpenStudy (anonymous):

- 5x + 7 < 42 first subtract 7 from both sides -5x < 35 then divide both sides by -5 and remember to flip the sign because it entails division by a negative x > 7 Hope that helps! (it's my first day on the site, so I hope the input is beneficial!)

OpenStudy (anonymous):

1.-5x + 7 < 42 2.-5x+7-42 3.-5x-35=0 4.-5x=35 5.x=35/5 6.x=7

OpenStudy (abb0t):

yep. 7 is correct.

OpenStudy (abb0t):

but negatie 7

OpenStudy (anonymous):

35 / (-5) = -7 correcly

OpenStudy (abb0t):

yes.

OpenStudy (anonymous):

When the divider moves to the number signal remains.

OpenStudy (anonymous):

1.-5x + 7 < 42 2.-5x+7-42 3.-5x-35=0 4.-5x=35 5.x=35/-5 6.x=-7

OpenStudy (anonymous):

x=-7

OpenStudy (abb0t):

x > -7

OpenStudy (anonymous):

The answer is: x > -7 or "x is greater than -7" My bad, in my last step, I forgot to keep in the negative sign. thanks for the catch!

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