Question

Name the property illustrated.
17. 2x + 5 = 5 + 2x
18. (x . y).5 = x (7.5)
19.5(7 - x) = 35 - 5x
20.5 + 0 = 5
21.-3+3 = 0​

Answer 1

17. Commutative property’s addition
20. Identity property’s addition