Solving for X
01-25-2019, 01:34 AM
Post: #1
 MullenJohn Junior Member Posts: 43 Joined: Sep 2017
Solving for X
Help,

I am trying to solve -3(4x-2.8)= -5(4x-2.8) for x using the HP Prime.

The answer should be X = 0.7.

In CAS mode I entered SOLVE( -3(4x-2.8)= -5(4x-2.8) ) and received

Would someone please tell me the steps to accomplish the solution with the HP Prime?

Cheers!
01-25-2019, 01:59 AM
Post: #2
 mfleming Senior Member Posts: 863 Joined: Jul 2015
RE: Solving for X
There is no implicit multiplication, so your entry needs to be

solve (-3*(4*x-2.8)=-5*(4*x-2.8))

Note the lowercase variable usage and the command in lowercase too. Use the Help button too when exploring the commands.

HTH,
~Mark

Remember kids, "In a democracy, you get the government you deserve."
01-25-2019, 02:10 AM
Post: #3
 MullenJohn Junior Member Posts: 43 Joined: Sep 2017
RE: Solving for X
Thank you Mark. It works for me now. Cheers!
01-25-2019, 04:16 PM
Post: #4
 informach Member Posts: 109 Joined: Jul 2015
RE: Solving for X
Hi!, MullenJohn :
Try, in CAS, with ...

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01-25-2019, 05:00 PM
Post: #5
 MullenJohn Junior Member Posts: 43 Joined: Sep 2017
RE: Solving for X
Thank you - very nice - Cheers!
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