Question 684209
N + H = 2700
H + 350 = 5(N-350)
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N = 2700 - H
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Substitution
H + 350 = 5N - 1750
H + 350 = 5(2700-H) - 1750
H + 350 = 13500 - 5H - 1750
H + 5H = 13500 - 1750 - 350
6H = 11400
H = 1900
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N = 2700 - H = 2700 - 1900 = 800
{{{highlight_green(800)}}} before the transfer
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