Simultaneous-pls run and check the errors

eq0 = "5x+7y=2"
eq1 = " " + eq0
eq3 = "4x+22y=9"
xp1 = eq1.index('x')
yp1 = eq1.index('y')
n0 = eq1[0:xp1]
l = len(eq1) - 1
bs1 = ""

n9 = 0.0
if n0 is bs1:
    n9 = 1

else:
     n9 = Double.parseDouble(n0)

m0 = eq1[(xp1 + 3):yp1]
bs2 = ""
m9 = 0.0
if m1 is bs2:
    m9 = 1


else:
    m9 = int(m1)



sgn = eq1[xp1 + 2]

def do () :
    break
def do1 () :
    m9 = (-1) * m9
    break

takeaction = {
    '+': do,
    '-': do1
    }
takeaction.get(sgn)()
print "COEFFICIENT OF X " + n9 + "\nCOEFFICIENT OF Y : " , m9
f0 = eq1[(yp1 + 3):(l + 1)]
f9 = int(f0) ;
print "final output is " , f9
#**************************************************************************
eq2 = " " + eq3
xp2 = eq2.index('x')
yp2 = eq2.index('y')
i0 = eq2[0:xp2]
l2 = len(eq2) - 1
is2 = ""

i9 = 0.0
if i0 is is2:
    i9 = 1

else:
     i9 = int(i0)

j0 = eq2[(xp2 + 3):yp2]
js2 = ""
j9 = 0.0
if j0 is js2:
    j9 = 1

else:
    j9 = int(m1)

sg = eq2[xp2 + 2]

def do () :
    break
def do1 () :
    j9 = (-1) * j9
    break

takeaction = {
    '+': do,
    '-': do1
    }
takeaction.get(sg)()

print "final output is " , f9
print "COEFFICIENT OF X  2 :" + i9 + "\nCOEFFICIENT OF Y 2 : " , j9
g0 = eq2[(yp2 + 3):(l2 + 1)]
g9 = int(g0) ;
print "final output is " , g9
fx = 0.0
fy = 0.0
if (n9/i9) == (m9/j9):
    print "SOLUTION NOT POSSIBLE"
    return
elif f9 == 0.0 and g9 == 0.0:
    print "SOLUTIONS NOT POSSIBLE"
    return
else
    fx = ((m9 * g9) - (f9 * j9))/((m9 * i9) - (n9 * j9))
    fy = ((f9 * i9) - (n9 * g9))/((m9 * i9) - (n9 * j9))

print "value of x is : " , fx
print "value of y is : " , fy