Formula for calculating free cash flow valuation? Having issues specifically with tax rate to determine FCF.

If given the following variables:

a) Earnings before interest and taxes (EBIT)

b) Depreciation and Amortization (D and A)

c) Capital Expenditures (CapEx)

d) Changes in Working Capital

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My guess is that this is the formula:

EBIT x (1-tax rate)

+depreciation/amortization

-change in working capital

-capital expenditures

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If so, and I plug in the corresponding numbers, how does:

30.2 x (1-tax rate)

+27.7

-4.4

-16.3

equal an FCF of 35.43?