Mallika and Kishore have the same number of marbles. To have a TOTAL of 85 marbles, they must pool their marbles together and then get 25 more."
Which equation represents the above situation, when x represents the number of marbles each of them have?
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The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.
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