How do you simplify #x +3 (x + 4y)#? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer De Rono Oct 27, 2015 #x+3(x+4y)# #= x+3x+4xy# #=4x+4xy# 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 1520 views around the world You can reuse this answer Creative Commons License