Asked by Anna-Marie
Find the value of x.
x / x+5 = x-4 / x
the book says the answer is 20, but im not getting that. I crossed multiplied and got x^2=(x+5)(x+4) and then multiplied that out x^2 = x^2 + 9x+ 20 and then 9x=20.. what am I doing wrong?
x / x+5 = x-4 / x
the book says the answer is 20, but im not getting that. I crossed multiplied and got x^2=(x+5)(x+4) and then multiplied that out x^2 = x^2 + 9x+ 20 and then 9x=20.. what am I doing wrong?
Answers
Answered by
Anna-Marie
those are proportions by the way
Answered by
mk-tintin
little mistake
you got x²=(x+5)(x-4)
you got x²=(x+5)(x-4)
Answered by
Anna-Marie
oooooh! i was wondering what i did. thank you =]
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