N+18=30. Subtract 18 both sides
N=12
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To solve the equation n + 3x6 = 30, first calculate 3x6, which equals 18. Then subtract 18 from both sides of the equation to isolate n. Thus, n = 30 - 18, which simplifies to n = 12.
n + 6 = 18 n = 12
n + 5 = 18 n = 13
n + 18 = 27 subtract 18 to 18 and 27 18-27=9 n = 9
N=3.