How do you solve #4+ ( 9+ n ) = 20#?

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Answer 1 · 2018-05-20T02:58:26

#n = 7#

#4 + (9 + n) = 20#

Because there's nothing to distribute, combine like terms:

#4 + 9 = 13#

#13 + n = 20#

Subtract 13 from both sides:

#20 - 13 = 7#

#n = 7#