Here is the solution to the problem:
Problem: 7F×3b−3c−4F+4b+9c+6
Step 1: Perform the multiplication.
7F×3b=21Fb
The expression becomes:
21Fb−3c−4F+4b+9c+6
Step 2: Group like terms together.
21Fb+(−3c+9c)−4F+4b+6
Step 3: Combine the like terms.
21Fb+6c−4F+4b+6
The simplified expression is 21Fb+6c−4F+4b+6.
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