How do you evaluate 40 − 2b, for b=4? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Alan N. Jun 19, 2018 32 Explanation: Expression =40-2b Given b=4 -> 2b = 2xx4 =8 :. Expression = 40 -8 = 32 Answer link Related questions How do you write the variable expression for: a quotient of 2 and the sum of a number and 3 ? What are variables? What are variable expressions? How do you write variable expressions? How do you evaluate variable expressions? How do you simplify the expression 3x-x+4? How do you write a quotient of a number and 6 as an expression? How do you evaluate the expression 2x+1 for x=1? How do you write a product of a number and 2 as an expression? How do you write 5 less than 2 times a number as a variable expression? See all questions in Variable Expressions Impact of this question 1568 views around the world You can reuse this answer Creative Commons License