x-.92x=24 How to solve on Prime?
04-23-2016, 07:47 AM
Post: #1
 SalivationArmy Junior Member Posts: 13 Joined: Apr 2016
x-.92x=24 How to solve on Prime?
is there a name for this type of equation?

x-.92x=24

and how do I make the prime solve this?

I know the answer is x=300, but I cannot figure out how to make the prime solve an equation like this.
04-23-2016, 08:03 AM
Post: #2
 salvomic Senior Member Posts: 1,396 Joined: Jan 2015
RE: x-.92x=24 How to solve on Prime?
(04-23-2016 07:47 AM)SalivationArmy Wrote:  is there a name for this type of equation?

x-.92x=24

and how do I make the prime solve this?

I know the answer is x=300, but I cannot figure out how to make the prime solve an equation like this.

In CAS:
solve(x-.92x=24, x) -> 300

Salvo

∫aL√0mic (IT9CLU) :: HP Prime 50g 41CX 71b 42s 39s 35s 12C 15C - DM42, DM41X - WP34s Prime Soft. Lib
04-23-2016, 09:45 AM (This post was last modified: 04-23-2016 11:10 AM by Aries.)
Post: #3
 Aries Member Posts: 159 Joined: Oct 2014
RE: x-.92x=24 How to solve on Prime?
(04-23-2016 07:47 AM)SalivationArmy Wrote:  is there a name for this type of equation?

x-.92x=24

and how do I make the prime solve this?

I know the answer is x=300, but I cannot figure out how to make the prime solve an equation like this.

Hi SalivationArmy,
that's an equation with one variable having no powers, it's called first-degree equation ;-)
Just collect like terms, isolate the variable and get x by itself:
x*(1-0.92)=24 --> 0.08*x=24 --> x=24/0.08=300, that's it !
A piece of cake for the Prime !!!!!
Best,

Aries :-)
04-23-2016, 09:53 AM
Post: #4
 DrD Senior Member Posts: 1,133 Joined: Feb 2014
RE: x-.92x=24 How to solve on Prime?
Another way, (assuming X is a real number):

In the Apps Library, the Solve App can be useful in [HOME] mode for linear equations like your example. Remember to use upper case X for your variable when you enter your equation in the [Symb] view. Then go to the [Num] view and just press the [Solve] black soft-key, which will return 300 in the solve box for X.

-Dale-
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