How do you combine like terms in #(6+ 8i ) + ( 1- 9i )#? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Bill Jorgensen May 18, 2018 #(7 - i)# Explanation: #(6+8i)+(1-9i)# #(6+8i +1-9i)# #(6+ 1 +8i-9i)# #(7 - i)# 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 1083 views around the world You can reuse this answer Creative Commons License