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Q: What is the algebraic expression for The sum of a number x and twenty-one?

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n + 10

6+n

(6+n) n= a number

divisor

the sum of a number and three

It is n + 14.

Assuming the number is x, then: x + 9

Write the following as an algebraic expression using x as the variable: The sum of a number and -8

x + 21

0.3333

You cannot write an algebraic expression for that, you need an equation. The equation is n - 6 = 4

The algebraic expression is n + 100, where n is the unknown number.

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