n = 3
3n x 2 = 18
3n x 2 / 2 = 18 / 2
3n = 9
3n / 3 = 9 / 3
n = 3
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3n - 2 = -10 3n = -10+2 = -8 n = -8/3 or -22/3
-3n + 4 = 2Subtract 4 from each side ==> -3n = -2Divide each side by -3 ==> n = 2/3
3n+1=7 3*2+1=7
10n+2
1 x 18 = 2 x 9 = 3 x 6 = 18