Maxim如何重新安排条款？

Question

在Maxima中这应该很简单：我有这个等式75.0*R+0.225*C=105

如何将其重新表达为R？

换句话说，我如何让Maxima向我展示R= (105-0.225*C)/75？

Answer 1

@@ RobertDodier在评论中写道，人们使用solve来做到这一点。

(%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