el numero es 3 esta fácil tu puedes
3(n-1)+10=2n+4
3n-3+10=2n+4
3n-2n=4+3-10
n=-3
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el numero es 3 esta fácil tu puedes
3(n-1)+10=2n+4
3n-3+10=2n+4
3n-2n=4+3-10
n=-3