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-20 = -4n - n

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

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Colum K. | Math from Algebra to Calculus, Trig, Programming, SAT, GED Math from Algebra to Calculus, Trig, Pro...
4.1 4.1 (11 lesson ratings) (11)
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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