Final answer:
The equation -3x + (-5y) - (-10) - 7x simplifies to -10x - 5y + 10 by combining like terms and changing the subtraction of a negative to addition.
Step-by-step explanation:
To solve the equation -3x + (-5y) - (-10) - 7x, first simplify by removing the parentheses and combining like terms. Start by changing the subtraction of a negative number to addition:
-3x - 5y + 10 - 7x
Next, combine the x-terms and simplify the equation:
(-3x - 7x) - 5y + 10
-10x - 5y + 10
The simplified form of the given equation is -10x - 5y + 10.