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maxima

Maxima how to re-arrange terms?

This should be dead simple in Maxima: I have this equation 75.0*R+0.225*C=105

How can I re-express this into R?

In other words, how do I get Maxima to show me R= (105-0.225*C)/75?

Solution

  • @RobertDodier wrote in a comment that one uses solve to do this.

    (%i1) 75.0*R+0.225*C = 105
(%o1) 75.0*R+0.225*C = 105
(%i2) solve(%,R)
rat: replaced 0.225 by 9/40 = 0.225
rat: replaced 75.0 by 75/1 = 75.0
(%o2) [R = -(3*C-1400)/1000]
(%i3) %[1]
(%o3) R = -(3*C-1400)/1000
(%o3) R = -(3*C-1400)/1000
(%i4) %,numer
(%o4) R = -0.001*(3*C-1400)
(%i5) %,expand
(%o5) R = 1.4-0.003*C