SOLUTION: I need help on this problem, i don't know where to start but i know if i get a start on it i will be able to solve it. 3/7+x - 5/x = 4/7x This problem is not from a book it's

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: I need help on this problem, i don't know where to start but i know if i get a start on it i will be able to solve it. 3/7+x - 5/x = 4/7x This problem is not from a book it's      Log On


   



Question 189483: I need help on this problem, i don't know where to start but i know if i get a start on it i will be able to solve it.
3/7+x - 5/x = 4/7x
This problem is not from a book it's on a worksheet

Answer by greta_elisif(10) About Me  (Show Source):
You can put this solution on YOUR website!
3%2F7%2Bx+-+5%2Fx+=+4%2F7x
If you get common denominators on the left side, then you can just cross multiply. (Think "common denominators" immediately when you see adding or subtracting fractions and you shouldn't get stuck with them.) I'd just multiply 3%2F7 by x%2Fx, x by 7x%2F7x, and 5x%2Fx by 7%2F7. Then I'd add and subtract on the left side to get something cross-multiplyable. Is this a good start?