How do you simplify #18( 1+ 4a ) - 3( 20a - 20)#? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Sarahhhh · Stefan V. Apr 9, 2018 #78+12a# Explanation: First, expand the brackets #= 18+72a - 60a + 60# then combine like terms #=78 + 12a# 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 1394 views around the world You can reuse this answer Creative Commons License