Mathematics, 21.04.2020 20:25, Zykuko

An equation can be used to represent a real-world situation where one number is unknown,
not provided or may change. That number is replaced by a variable. Let's say Kerry and her
sister Moira were selling raffle tickets for a school fundraiser, Moira sold si tickets, and they
sold 72 tickets in all To find out how many tickets Kerry sold, we can make an equation with
a variable: 51 (the number of tickets Moira sold) + % (the unknown number of tickets Kerry
sold) = 72 (the total number of tickets sold). Any variable, from a to z, can be used to
represent Kerry's tickets here, it doesn't have to be

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An equation can be used to represent a real-world situation where one number is unknown,
not p...