To solve the equation \(-0.9 - 3.3y = -13.77\), follow these steps:
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Isolate the term with \(y\): \[ -3.3y = -13.77 + 0.9 \]
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Calculate the right side: \[ -13.77 + 0.9 = -12.87 \] So, we now have: \[ -3.3y = -12.87 \]
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Divide both sides by \(-3.3\): \[ y = \frac{-12.87}{-3.3} \]
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Perform the division: \[ y = \frac{12.87}{3.3} \approx 3.903 \]
Thus, the solution is: \[ y \approx 3.903 \]