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Mathematics 19 Online
OpenStudy (anonymous):

-2x + 5 < 7

OpenStudy (azureilai):

To find x, isolate it to one side of the equation Ot should look like x>(7-5)/-2 Now simplify right side

OpenStudy (anonymous):

how would i simplify

OpenStudy (anonymous):

im in 10th grade but have always had trouble with math

OpenStudy (azureilai):

ok, so what is 7-5?

OpenStudy (anonymous):

2

OpenStudy (azureilai):

Now divide 2 by -2

OpenStudy (anonymous):

that would be a negative right

OpenStudy (azureilai):

yes

OpenStudy (anonymous):

-4

OpenStudy (azureilai):

nope what you did was multiply 2 by -2. You have to divide them

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

-1

OpenStudy (azureilai):

correct. So when solving inequalities, remember that whenever you divide a negative nu,ber from one side of the equation, the sign flips. So your final answer is x>-1

OpenStudy (anonymous):

thank you

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