translate each sentence into an equation
1. the sum of 5x and 3x is 8x.
2. the sum of y divide to 2 and 3 is 7
3. the product of 3 and x + 2 is equal to 12.
4. the quotient of x + 3 and 5y is the same as the product of x and 5.
5. the quotient of x + 3 and 5y is the same sd the product os x and y.
6. the square of the sum of a and b is equal to 9.