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elena-14-01-66 [18.8K]
3 years ago
7

What is the x value for 21x+7y=42

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
6 0

Step-by-step explanation: 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!

Andreyy893 years ago
5 0
The value of X is 1.66 repeated ?
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Answer:

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Step-by-step explanation:

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b) distance = 300m , time = 20s

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7 0
3 years ago
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2 years ago
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4 0
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I need help.Please help me.
goldenfox [79]

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4 0
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