I just need help for 1, 2, and 3 pls help me..

1. 47 - 2 x n = 1/2n

2. 2n = 12

3. 9 = 3/5n - n

Some things that might help:

Every time when you see "times" it would be something times the number

        2 times a number = 2n

When you see "subtracted from" the last number mentioned would go up front

        A number subtracted from 47 = 47 - n

answer; fair labor and standard act;

using the scientific method.