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Q: What is the variable in this algebraic expression 7d 2?

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The variable is "d".

7 is the coefficient of the variable d

By definition a term is the basic unit of algebra which must contain 3 parts - a sign, a coefficient and a variable (e.g., 2n [+ sign implied, coefficient '2' and variable 'n'] and -7d). In the expression 2n-4-7d then, there are 2 terms.

It is an expression of algebraic terms with no equality sign

d is the variable here.

Related questions

The variable is d, in the algebraic expression 7d+2

The variable is "d".

7 is the coefficient of the variable d

what is the constant in algebraic experssion 7d+2

The coefficient would be the number multiplied by the variable, in this case: 7

2

7d + 2 7 is the only coefficient

By definition a term is the basic unit of algebra which must contain 3 parts - a sign, a coefficient and a variable (e.g., 2n [+ sign implied, coefficient '2' and variable 'n'] and -7d). In the expression 2n-4-7d then, there are 2 terms.

It is an expression of algebraic terms with no equality sign

You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.

d is the variable here.

Algebraic expressions are mathematical phrases that contain numbers, operations and at least one variable. An example of an algebraic expression would be : 4x + 3= 9x.

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