B.
You know that the angle formed by 51 and y + 6 is equal to 106 because it needs to be supplementary with the 74. Thus, after subtracting you can get 49.
The best and most correct answer among the choices provided by your question is the third choice or letter C "<span>Multiplication Property of Equality"</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Answer:

Step-by-step explanation:

To simplify this expression, first use the distributive property to distribute
.

Simplify.

Combine like terms,
and
.
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The simplification of
is
.
I hope this helps ^^
Good luck
Answer: 45.
Step-by-step explanation:
You hit the woah with a song on