While simplifying an expression or solving an equation, every step of the work
must have a reason allowing that step. Sometimes these reasons are properties.
Even though a step may seem obvious, write out each step in full detail to help
yourself see what's being used as a reason to justify the step.
For instance, simplify:
12 + 2(x − 6)
= 12 + 2x − 12
= 2x + 12 − 12
= 2x + (12 − 12)
= 2x + 0
= 2x
Each of the above steps has a reason for why I could do the step.
them properties? If so, which ones?
1
Are any of