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-BARSIC- [3]
4 years ago
9

Solve the inequality 12n - 9> 5n + 47

Mathematics
2 answers:
mel-nik [20]4 years ago
8 0

Answer:

\large\boxed{n>8\to n\in(8,\ \infty)}

Step-by-step explanation:

12n-9>5n+47\qquad\text{add 9 to both sides}\\\\12n>5n+56\qquad\text{subtract 5n from both sides}\\\\7n>56\qquad\text{divide both sides by 7}\\\\n>8

8090 [49]4 years ago
7 0

Answer:

n >8

Step-by-step explanation:

12n - 9> 5n + 47

Subtract 5n from each side

12n-5n - 9> 5n-5n + 47

7n -9> 47

Add 9 to each side

7n-9+9 >47+9

7n > 56

Divide each side by 7

7n/7 >56/7

n >8

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