Efg and ∠gfh are a linear pair, m∠efg 3n+23, and m∠gfh 4n+17. what are m∠efg and m∠gfh?

M∠EFG = 3n + 23
m∠GFH = 4n + 17

    m∠EFG + m∠GFH = 180
(3n + 23) + (4n + 17) = 180
(3n + 4n) + (23 + 17) = 180
                     7n + 40 = 180
                           - 40    - 40
                             7n = 140
                              7        7
                               n = 20

m∠EFG = 3n + 23
m∠EFG = 3(20) + 23
m∠EFG = 60 + 23
m∠EFG = 83

m∠GFH = 4n + 17
m∠GFH = 4(20) + 17
m∠GFH = 80 + 17
m∠GFH = 97

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