In Jiangsu Yangzhou, if the social security base is 9700, the tax deduction calculation is as follows:

1. First, calculate the amount of social security contributions:

• Pension insurance: The individual contribution rate is 8%, so the individual pension insurance contribution is ​
  ×8%=
  yuan.

• Medical insurance: The individual contribution rate is 2%, so the individual medical insurance contribution is ​
  ×2%=
  yuan.

• Unemployment insurance: The individual contribution rate is 0.5%, so the individual unemployment insurance contribution is ​
  ×0.5%=48.5
  yuan.

• Housing provident fund: Assuming the contribution rate is 5% (the actual rate may vary according to the company's regulations), the individual housing provident fund contribution is ​
  ×5%=
  yuan.

• The total individual social security and housing provident fund contribution is ​
  ++48.5+=1503.5
  yuan.

2. Then, calculate the taxable income:

• The individual income tax threshold is 5000 yuan.

• The taxable income = salary income - social security and housing provident fund contributions - tax threshold.

• Assuming no other deductions, the taxable income is ​
  −1503.5−=3196.5
  yuan.

3. Next, calculate the individual income tax:

• According to the individual income tax rate table, for a taxable income of 3196.5 yuan, the applicable tax rate is 3%, and the quick deduction is 0.

• The individual income tax = taxable income × tax rate - quick deduction, so the individual income tax is ​
  3196.5×3%−=95.895≈95.9
  yuan.

In summary, when the social security base in Yangzhou, Jiangsu is 9700, and assuming no other deductions, the individual income tax is approximately 95.9 yuan. It should be noted that if there are other special additional deductions or changes in social security and housing provident fund contribution rates, the calculation results will be different.