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Ghella [55]
3 years ago
10

-21+x=49 what is X HELP PLS

Mathematics
1 answer:
iragen [17]3 years ago
6 0

Answer:

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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Gala2k [10]
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5 units down

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