determine if each is an expression or an equation

1. 16-6= 10
2. 4 x 2 + 1
3. x + 25
4. y + 8 = 40y
5. five more than x
6. nine less than w
7. a number increased by 4 is twelve
8. thirty is equal to twice a number decreased by four

9. thrice r
10. seven multiplied to the sum of twelve and four

expression or equation?​