Solving binomial equations

def tokenizer(expr, tokens):
   
    termo = ""
    lstTermos = []
   
    for e in expr:
       
        if e in tokens:
            lstTermos += [termo]
            if e != "=":
                termo = e
            else:
                termo = ""
                lstTermos += ["="]
           
        else:
            termo += e
       
       
    lstTermos += [termo] 
    return lstTermos
 
def dictEq(eq):
    side = 'left'
    dct = {'left':[], 'right':[]}
   
    for e in eq:
            
        if e == '=':
            side = 'right'
        else:
            dct[side] += [e]
       
    return dct           
 
def removeItemFromList(lst, items):
    for i in items:
        lst.remove(i)
 
    return None
 
def organizerSides(dct):
    #To Initializing the variables...
    lstLeftItemsToRemove=[]
    lstRightItemsToRemove=[]
    lstLeftItems = []
    lstRightItems = []
   
    #Look at the left side and move all constants to the right side of the equal sign
    for e in dct['left']:
        if e.count('x') == 0:
           
            if (-1)*int(e)> 0:
                sign = '+'
            else:
                sign = ''
           
            lstRightItems += [sign+str((-1)*int(e))]   
            lstLeftItemsToRemove += [e]
    removeItemFromList(dct['left'],lstLeftItemsToRemove)
    dct['right'] += lstRightItems
   
    #Look at the right side and move all variables to the left side of the equal sign
    for e in dct['right']:
        if e.count('x'):
            coeficiente = int(e.strip('x'))
            if (-1)*coeficiente > 0:
                sign = '+'
            else:
                sign = ""
            lstLeftItems += [sign + str((-1)*coeficiente)+'x']
            lstRightItemsToRemove += [e]
           
    removeItemFromList(dct['right'], lstRightItemsToRemove)
    dct['left'] += lstLeftItems
   
    return dct['left'], dct['right']
 
 
def solvEquation(equation):
    print "\nLet's solve...\n\n",equation,"\n"
    eq = tokenizer(equation,"+-=")
    leftEq, rightEq = organizerSides(dictEq(eq))
    print ''.join(leftEq)+"="+''.join(rightEq)
    sLeft = 0
    sRight = 0

for e in leftEq:

sLeft += int(e.strip('x'))

for e in rightEq:
       
        sRight += int(e)
       
    print str(sLeft)+"x="+str(sRight)
    print "x="+str(sRight)+"/"+str(sLeft)
    sLeft,sRight = float(sLeft),float(sRight)
    print "x=", sRight/sLeft

def main():
    equation=raw_input("Enter with binomial equation in format\n> ")
    #Remove all blank spaces from equation
    eq = equation.replace(' ','')    
	
    #Solvind the equation    
    solvEquation(eq)

#Run main
main()

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