Final answer:
To subtract 4x - 8y + 3 from 10 + 5x - 7y, change the signs of the second polynomial, combine like terms, and simplify to get the answer x + y + 7.
Step-by-step explanation:
To perform the indicated operations and write the answer in descending order for the expression 'subtract 4x - 8y + 3 from 10 + 5x - 7y', you follow these steps:
- Rewrite the problem by flipping the sign of the second polynomial to perform the subtraction: (10 + 5x - 7y) - (4x - 8y + 3).
- Remove parentheses and change the sign of each term in the second polynomial: 10 + 5x - 7y - 4x + 8y - 3.
- Combine like terms by adding or subtracting coefficients of the same variable: (5x - 4x) + (-7y + 8y) + (10 - 3).
- Simplify the result: x + y + 7.
The answer in descending order is x + y + 7.