Fill in the Blank

A quality control technician is monitoring a pressure drop in a vacuum system over three consecutive minutes. The total pressure change is recorded as -45 millibars. To find the specific change for each minute, the technician sets up the equation n+(n+1)+(n+2)=45n + (n + 1) + (n + 2) = -45. Before solving for nn, the technician must combine like terms on the left side. The resulting simplified expression is ______ =45= -45.

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Updated 2026-04-18

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