1 = 2 ??????
what's wrong with this picture? 
Step 1: a and b > 0
Step 2: a = b
Step 3: a2 = ab
Step 4: a2 - b2 = ab - b2
Step 5: (a + b)(a - b) = b(a - b)
Step 6: (a + b) = b
Step 7: b + b = b
Step 8: 2b = b
Step 9: 2 = 1

Step 1: a and b > 0
Step 2: a = b
Step 3: a2 = ab
Step 4: a2 - b2 = ab - b2
Step 5: (a + b)(a - b) = b(a - b)
Step 6: (a + b) = b
Step 7: b + b = b
Step 8: 2b = b
Step 9: 2 = 1






