Distribute and Multiply: First, distribute the 9 to both terms inside the parentheses: 9×(−8f)+9×7. This gives us −72f+63.
Combine Like Terms: Next, combine the like terms by adding 2f to −72f, which gives us −70f.
Add Constant Term: Finally, we add the constant term 63 to the expression, which remains unchanged since there are no other constant terms to combine it with. So, the expression simplifies to −70f+63.
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