Question

qhat is the solution for 3(n-1)=21 ​

Answer 1

Answer:

8

3(n-1)=21

multiply 3

3n-3=21

3n=21+3

3n=24

n=24/3

n=8

Check

by writing 8in n place

3(8-1)=21

3(7)=21

21=21

I think you can understand

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