Sunday

March 29, 2015

March 29, 2015

Posted by **Joe** on Monday, April 9, 2007 at 7:40pm.

12 = x

___ ___

16 20

and

8 = 14

__ ___

12 x

See previous post.

i still dont get it sorry

Cross multiply to find x.

Here's the first one; perhaps you can try the second one on your own.

12/16 = x/20

Take 12 * 20, which is 240. Take 16 * x, which is 16x. This is cross multiplying.

Therefore:

16x = 240

Divide both sides by 16 to solve for x.

You will find that x = 15

You can check by substituting 15 for x in your original problem.

12/16 = 15/20

This is a true statement, so you know the answer is correct.

I hope this is clearer.

Thanks for posting, MathGuru. Really good work.

**Answer this Question**

**Related Questions**

math - Show how to make one addend the next ten number. complete the new ...

calculus - Leave any unneeded answer spaces blank. [Hint: use synthetic division...

statistics - Terms and Definitions matching ___ Statistics ___ Discrete variable...

science - freezing and thawing cycle that causes potholes in roads and breaks in...

Algebra, math - how do I find a value of x that will make each proportion true...

Math - i can't find these patterns. my mom and dad tried to. first problem 64,__...

Chemistry Lab - Provide the correct coefficients to balance the following ...

Math - I'm stumped on this one too: s e e d + i c e d ---------- s p i c e c= ...

Math - How can I complete these 4 patterns: 17, ___, ___, 62, ___, 92 39, ___, ...

French - Hello, I am taking a French course online and i just want someone to ...