-20 = -4n - n

Question

Need help with math homework. It's about solving multi step equations.

Answer 1

first you want to combine like terms to get the "n" values together

-20 = -5n

then divide both sides by -5 to get n by itself

n = -20/-5 = 4

Answer 2

multiply both sides by -1

 

that gives you 20 = 4n + n

 

add 4n and n

 

 that is 5n so you have 20 = 5n

 

divide both sides by 5

 

that gives you 4 = n    that is the solution