10n+12 = 14n-12
10n-14 = -12-12
-4n = -24
n = 6
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10n + 3 = 7n + 53n = 2n = 2/3
10n = 1,000,000 n= 1,000,000 divide by 10 n= 100,000
7n - 2 + 3n + 4 = 7n + 3n - 2 + 4 = 10n + 2 which can be simplified to 2(5n +1)
so you set it up. 10n+5 divide each side by 5 n=2
The n is an unknown variable.