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translate the following mathematical sentences to equations.
1. five added to the product of 4 and a number is the same as 6 times a number
2. the sum of thrice a number and 15 is 25
3. six times a number, less 11 is 49
4. two less than three times a number is 28
5. twice a number is 10
6. nine added to a number is 20