What is the value of #2a-3b+6# when a=2 and b=-5? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer seol Nov 19, 2016 answer is #25# Explanation: #2\color(red)(a)-3\color(blue)(b)+6# when #\color(red)(a=2)# and #\color(blue)(b=-5)# #2(\color(red)(2))-3(\color(blue)(-5))+6# #=4-(-15)+6# #=19+6# #=25# 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 2242 views around the world You can reuse this answer Creative Commons License