Question

What property is shown in the equation?  –53 ÷ 1 = –53

  A. division into zero property   B. identity property of division   C. negative one property of division   D. reciprocal property

What property is shown in the equation?  5ac = 5ca   A. Identity Property of Multiplication   B. Reciprocal Property of Multiplication   C. Zero Property of Multiplication   D. Commutative Property of Multiplication

Answer 1

The first one is negative one property of division, I think.
The second one is commutative property of multiplication.