Question

please answer me fast tommaro is my favorite test exuly my favorite subject is math and all English subject ​

Answer 1

Answer:

3n-15=21

3n=21+15

3n=36

n=36÷3

n=12

Step-by-step explanation:

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Answer 2

3(n-5)=21

3n-15=21

3n=21+15=36

n=36/3

n=12