Question

You know that 12x=60, and that x=5. Which property of equality would you use to conclude that 12•5=60?

Answer 1

The substitution property of equality.

Step-by-step explanation

We know that:

`12x = 60`

and that

`x = 5`

Since x=5 or 5=x , we can substitute x for 5 wherever we see x in the given equation.

When we do that, we obtain;

`12 \bullet \: 5 = 60`

This is what we refer to as the substitution property of equality.