SOLUTION: x-7/x+9=4/7 What is solution(s) for x?

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Question 283116: x-7/x+9=4/7
What is solution(s) for x?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x-7/x+9=4/7
(X*X-7)/X=4/7-9
(X^2-7)/X=(4-9*7)/7
(X^2-7)/X=(4-63)/7
(X^2-7)/X=-59/7 CROSS MULTIPLY.
7(X^2-7)=-59X
7X^2-49+59X=0
7X^2+59X-49=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(-59+-sqrt[59^2-4*7*-49])/2*7
x=(-59+-sqrt[3,481+1,372])/14
x=(-59+-sqrt4,853])/14
x=(-59+-69.66)/14
x=(-59+69.66)/14
x=-10.66/14
x=.76 ans.
x=(-59-69.66)/14
x=-128.66/14
x=-9.19 ans.