SOLUTION: solve these proportions. One of the examples in my text book was 65/10 = 13/x 10 x x/63+63 x 2/9 x=14 I dont get how to do any of these I get how you times the top left corn

Algebra ->  Proportions  -> Lessons -> SOLUTION: solve these proportions. One of the examples in my text book was 65/10 = 13/x 10 x x/63+63 x 2/9 x=14 I dont get how to do any of these I get how you times the top left corn      Log On


   

Question 15124: solve these proportions. One of the examples in my text book was
65/10 = 13/x
10 x x/63+63 x 2/9
x=14
I dont get how to do any of these I get how you times the top left corner w/ the bottom right corner and the bottom left coner w/the upper right corner but after those steps I dont get also heres a problem im on.

3/8 + 12/x
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You can solve proportions by cross-multiplying.
65%2F10+=+13%2Fx Cross-multiply. This means, multiply both sides by x then multiply both sides by 10.
65x+=+10%2813%29 Simplify.
65x+=+130 Divide both sides by 65
x+=+2

I assume that there is a typo in the second problem and you really meant to type:
3%2F8+=+12%2Fx Try this yourself. Cross-multiply, first by x then by 8, then you can solve for x.