Translate each sentence into algebraic equation. Number 1 is done for you.
1. A number increased by four is twelve. a+4=12
2. A number decreased by nine is equal to eleven. ______
3. Five times a number is fifty._______
4. The quotient of a number and seven is 8.______
5. The sum of a number and 10 is 20. _______
6. The difference between six and a number is two. ______ ​