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Anonymous
N=3.
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5n-2+2=4n 5n=4n n=0
8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4
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In the equation 5n-11=4n+20, n is equal to 31.
5n - n = 8 + 4 ie 4n = 12 so n = 3