Question

PLEASE HELP! Since AB=1 and 1=BC, BC=AB by which property?

Is it substitution or transitive and why?

Answer 1

Substitution.

Here is an example.

Let x be equal to 3 and y equal to 3.

`x=3, y=3`

From this we can conclude that the values of both x and y are equal to three therefore x and y have the same value and are equal.

`x\wedge y=3\Longrightarrow x=y`

Here in your case we have:

`</p><p>AB=1, BC=1 \\</p><p>AB\wedge BC=1\Longrightarrow AB=BC`

Hope this helps.

r3t40