Solving for X

[MullenJohn]

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

Error: Bad Argument Value.

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

Cheers!

[mfleming]

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

[MullenJohn]

Thank you Mark. It works for me now. Cheers!

[informach]

Hi!, MullenJohn :
Try, in CAS, with ...

[MullenJohn]

Thank you - very nice - Cheers!