Mathematics
13 Online
OpenStudy (anonymous):
does anyone know how to do this math problem
Solve the linear inequality
7/11x+5/11>-2/11x-2/33
the solution set is =
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OpenStudy (ivettef365):
you need to combine like terms as follows:
7 2 2 5
----- x + ----- x = - ----- - -----
11 11 33 11
add both fractions
OpenStudy (anonymous):
oh so add 2/33 -5/11
OpenStudy (anonymous):
or no
OpenStudy (anonymous):
add what
OpenStudy (ivettef365):
ok 7/11 + 2/11 = 9/11 so you have
and -2/33 + (-5/11) = -17/33
9/11 x = - 17/33
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OpenStudy (ivettef365):
Do you have choices?
OpenStudy (anonymous):
oh so the answer is -17/33
OpenStudy (anonymous):
no choices
OpenStudy (ivettef365):
No, that is not the answer now you need to isolate the x
OpenStudy (anonymous):
okay how
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OpenStudy (ivettef365):
multiply both sides by 11/9
OpenStudy (anonymous):
okay
OpenStudy (ivettef365):
so you have
11 9 17 11
---- x --- x = - ---- x ----
9 11 33 9
OpenStudy (ivettef365):
what did you get ?
OpenStudy (ivettef365):
actually is not (=) is (>)
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OpenStudy (anonymous):
huh
OpenStudy (anonymous):
i got 70
OpenStudy (ivettef365):
ok, when you multiply 11/9 x 9/11 that is equal to 99/99 which is equal to 1, so the x isolates
so you have x> -17/18
OpenStudy (anonymous):
okay and then you add 17/18
OpenStudy (ivettef365):
no, that is the answer and remember is negative
x> - 17/18
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OpenStudy (anonymous):
oh okay thank you