# Back to simple algebra!

1. Dec 15, 2012

### simpComp

Hello,

Okay, after doing perhaps 1 hour of math a year for 20 years, I realize I forgot a lot!!!

Can someone please tell what I need to do if I want to get rid of the denominator of 900 in the following expression:

76.262 = ((124 + 30b - c)/900) + c

Please see attachment to see exact equation...

I am trying to find a number I can multiply 124 so that the result can be divided by 900... but I can seem to find it???

Thanks

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2. Dec 15, 2012

### simpComp

nevermind ... digging up my old algebra notes, I figured that I can multiply every term by 900....

jeeeezzze,,,

3. Dec 15, 2012

### symbolipoint

The denominators shown in the equation are 1000 and 900. See the "76.262". The common factor is 233253

4. Dec 15, 2012

### simpComp

In all due respect, where do you see 1000 as a denominator???

5. Dec 15, 2012

### simpComp

To get rid of the 900 we could
simply multiply all terms by 900...no?

(900)76.262 =
((900*124 + 900*30b - 900*c)/900) + 900*c

this works!!!
thanks

6. Dec 15, 2012

### symbolipoint

Already explained in my post. It is correct, but unnecessary if you wish to maintain decimalized result.

7. Dec 15, 2012

### symbolipoint

Now that I look at the equation again, my picking at the decimal part, ".262" with denominator of 1000 plays no part in the solution. Changing the form would not be useful unless a specific application depended on it.

8. Dec 15, 2012