Linear program problem solving Dual and using SIMPLEX

i think i had to do tis wrong its taking me a ffreakin life time to solve, can any1 tell me how many interations they did for this problem.... and what kind of numbers there getting, i set

Find the dual of the following LP and then solve the dual using the simplex

max -x1 -2x2

s.t -3x1+x2<= -1

x1 -x2 <=1

-2x1+7x2<=6

9x1-4x2<=6

-5x1+2x2<=-3

7x1-3x2<=6

x1,x2>=0

here is the dual i got i dunno if u guys will ge tthe same

where w is the variable i introduced

min -w1+w2+6w3+6w4-3w5+6w6

s.t

-3w1+w2-2w9w4-5w5+7w6<=-1

w1-w2+7w3-4w4+2w5-3w6<=-2

w1,w2>=0

my slack variables are s and t

so applying simplex i get

max w1 - w2 - 6w3 - 6w6 +3w5 -6w6

subject to (s.t.)

-3w1+w2-2w9w4-5w5+7w6 + s = -1

w1-w2+7w3-4w4+2w5-3w6 + t = -2

w1,w2>=0

now therest is also taking me forever so i think im doion sumthin wrong