Full question: In cell K10, create a formula using the SUM function that calculates the total of the range F17:F20, subtracts it from the value in cell J10, adds the total of the range G17:G20, and subtracts 160.
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Required formula is
=J10-SUM(F17:F20)+SUM(G17:G20)-160. It says subtract from.. so J10 should be at begining.