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Answer:
11x+25
Step-by-step explanation:
1. Distribute
4x+4+7x+21
2. Add the numbers
4x+25+7x
3.Combine like terms
11x+25
Answer: 726 square feet of flooring
Step-by-step explanation: 18 divided by 3 is 6. Multiply 121 by 6 and get 726
If the greatest common divisor of the numerator and the denominator is 1, then the fraction is irreducible.