Asked by Lina
1/x+1/x+5+1/3x=1/2.25
Solve for x.
Solve for x.
Answers
Answered by
Damon
do you mean
1/x + 1/(x+5) + 1/(3x) = 100/225 ????
225/x +225/(x+5) + 75/(x) = 100
300/x + 225/(x+5) = 100
(x+5)(300) + 225 x = 100x(x+5)
300 x + 1500 + 225 x = 100 x^2 + 500 x
100 x^2 -25 x -1500 = 0
20 x^2 - 5 x - 300 = 0
4 x^2 - x - 60 = 0
(x-4)(x+15) =
x = 4 or x = -3.75
1/x + 1/(x+5) + 1/(3x) = 100/225 ????
225/x +225/(x+5) + 75/(x) = 100
300/x + 225/(x+5) = 100
(x+5)(300) + 225 x = 100x(x+5)
300 x + 1500 + 225 x = 100 x^2 + 500 x
100 x^2 -25 x -1500 = 0
20 x^2 - 5 x - 300 = 0
4 x^2 - x - 60 = 0
(x-4)(x+15) =
x = 4 or x = -3.75
Answered by
Lina
OMG thank you so much for the thoroughness
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