Question

What is the unknown number?which property did u use? (_+8)+32=49

Answer 1

The unknown number in the equation (_+8)+32=49 is 9. The addition property used in the equation is the 'Associative Property of Addition' which allows us to add the same numbers in any order.

Step-by-step explanation:

To find the unknown number, we can start by simplifying the equation. Since we know that (_+8)+32=49, the first thing to do is combine the numbers 8 and 32. Adding them gives you 40. So, the equation then becomes _+40=49. To solve for the unknown number, you subtract 40 from both sides of the equation which gives you _=9.

The property that is being used in this equation is Associative Property of Addition. This property states that you can add the same numbers in any order. In this case, we combined 8 and 32 first, then added the unknown number.

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Answer 2

First of all, subtract 32 from both sides:
(?+8)+32-32=49-32
?+8=17
And then, we subtract 8 from both sides again:
?+8-8=17-8
?=9
So the unknown number is 9.
Hope this helps! :D I'm not sure what type of property the question was looking for, so can't really help you there aaa sorry ;w; But it probably is the Subtraction Property of Equality (just looked it up, but I'm not sure if that's the answer you were looking for)~
(I'm using ? because I'm assuming that you are not familiar with using x or other letters as the unknown so yeah :D)