How do you simplify #a+12+7a+18#? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Barney V. · EZ as pi Dec 23, 2016 #=8a+30# Explanation: #a+12+7a+18" "# add the like terms #=8a+30# 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 1091 views around the world You can reuse this answer Creative Commons License