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Algebra question need help with it (i got regents tomorrow)?
i saw this question in a practice test and could not recall the way of answering this question and i can't risk that in case if there is a question like on the regents tomorrow. the question is solve for x
x + 1 / x = -7 / x - 12
3 Answers
- oldteacherLv 51 decade agoFavorite Answer
Cross multiply a/b=c/d would be ad=bc Multiple the numerator of one by the denominator of the other, etc. then set them equal to one another.
(x+1)(x-12)= x(-7)
Now FOIL the left side.
x^2 -12x+1x-12= -7x
x^2 -11x - 12 + 7x=0
x^2 -4x -12=0
(x - 6 )(x +2 )=0
x-6=0 or x+2=0
x=6 or x= -2
- momLv 71 decade ago
x + 1 / x = -7 / x - 12
Is it (x + 1) / x = -7 / (x - 12) or x + (1 / x) = (-7 / x) - 12
you need to be more specific.
- Anonymous1 decade ago
just multiply all terms by x and you get a quadratic equation.
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After reading other answers, I think you need to look up order of operations first.
