Final answer:
The expression -3(-lly +27 +30) -4y +z can be simplified, assuming -lly was a typo meant to be -11y, to 29y + z - 171. Without specific values for y and z, further simplification is not possible.
Step-by-step explanation:
In order to simplify this mathematical expression, we must follow the order of operations, often remembered by the acronym PEMDAS (Parenthesis, Exponents, Multiplication and Division, Addition and Subtraction). First, simplify the expression within the parenthesis (-lly +27 +30). Bear in mind that -lly could be a typographical error as it does not correspond with a standard mathematical operation or symbol.
Let's assume it's meant to be -11y. With this correction, the expression inside the parentheses would be (-11y + 27 + 30). Solving this gives (-11y + 57). Next, multiply this result by -3, resulting in 33y - 171. Combine this expression with the rest of the initial equation to get 33y -171 -4y + z. Further simplification by combining like terms gives you 29y + z - 171.
Without additional context or specific values for y and z, this is the simplest form of the provided expression. Please cross-check this with your study materials or class notes to ensure the initial typo did not distort the problem's intended meaning.
Learn more about Expression Simplification