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Anonymous
Let's give it a go:
3n - 6 = 9
Add 6 to each side of the equation:
3n = 15
Divide each side by 3:
n = 5
Wiki User
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9 x 27 equals 243
A + 9 = 21 A = 21 - 9 A = 12
x=7
4a - 9 = 27 4a = 36 a = 9
3x-11 for x=9