Question

Someone please tell me the properties of equality for problem 9

Answer 1

Answer: k=-2

Explanation:

`10k-4=2k-20\\10k-4+4=2k-20+4\\10k=2k-16\\10k-2k=2k+16-2k\\8k=-16\\`

Divide both parts of the equation by 8:

`k=-2`

Answer 2

Let me give you a short cheat sheet of properties

Explanation:

• The Reflexive Property. a =a.
• The Symmetric Property. If a=b, then b=a.
• The Transitive Property. If a=b and b=c, then a=c.
• The Substitution Property. If a=b, then a can be substituted for b in any equation.
• The Addition and Subtraction Properties. ...
• The Multiplication Properties. ...
• The Division Properties. ...
• The Square Roots Property*