Final answer:
The student's question deals with the simplification of two mathematical expressions. The order of operations (PEMDAS) should be used to simplify the expressions. To find the value of Q in the second expression, the outcome of the product 3*505 should be added to both sides of the equation.
Step-by-step explanation:
The equations given in the question can be simplified by following the order of operations, which is often remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
For the first equation, 21 + (21 - 1), you would first execute the operations within the parentheses, simplifying it to 2 + 1, which equals 3. Second equation, Q - 3*( -6 + 29 - 1 ) can be solved by first solving operations within parentheses: -6 + 512 -1 = 505. Thus, the equation becomes Q - 3 * 505.
Consequently, to solve for Q, you would have to add the outcomes of 3 * 505 to both sides of the equation.
Learn more about Order of Operations