tell whether the following is an expression or an equation

1. m plus three is five
2. n less than 11 is 5
3. 6t - 13 = 24
4. two times a number
5. 27y + 38x
6. 6 + 2 is 85
7. (b+8) ÷ 2
8. ten decreased by m is 7
9. m + 2π
10. -5g + 2h = 16​