How do you simplify #8a + b - 3a + 4b#? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Don't Memorise Sep 13, 2015 # =color(green)( 5a+5b# Explanation: #8a+b−3a+4b# Grouping like terms # =color(green)( 8a−3a)+ color(blue)(b+4b# # =color(green)( 5a+5b# 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 2564 views around the world You can reuse this answer Creative Commons License