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

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asked Oct 7, 2021 114k views

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Peter Cordes · Answer 1 · 2021-10-12T22:08:47+0000

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!

What is the x value for 21x+7y=42-example-1

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

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