SOLUTION: I'm sorry. I left out the 7. 2/x + 1/2x = 7 ?

Algebra ->  Functions -> SOLUTION: I'm sorry. I left out the 7. 2/x + 1/2x = 7 ?      Log On


   

Question 8640: I'm sorry. I left out the 7.
2/x + 1/2x = 7 ?
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean 2%2Fx+%2B+1%2F%282x%29+=+7

Assuming that this is the case, the LCD for the entire problem is 2x, so multiply both sides of the equation by 2x:
+%282x%29%2A%28+2%2Fx%29+%2B+%282x%29%2A+%281%2F%282x%29%29+=+2x%2A7

This eliminates all the denominators:
4 + 1 = 14x
5= 14x

Divide both sides by 14:
x= 5%2F14

R^2 at SCC