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Show how to write, evaluate and simplify an expression to represent and solve this problem :jeff and his friends each text four classmates about a concert.if no recieves the message more than once,how many students from the other school recieve a text about the concert

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Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message more than once, how .